diff --git a/src/cl/rut.spec.ts b/src/cl/rut.spec.ts
index c099e962..f42ad99b 100644
--- a/src/cl/rut.spec.ts
+++ b/src/cl/rut.spec.ts
@@ -30,12 +30,38 @@ describe('cl/rut', () => {
     expect(result.isValid && result.compact).toEqual('125319092');
   });
 
+  // The number is normally printed with the thousands separators, which is
+  // also what format() emits.
+  it('validate:12.531.909-2', () => {
+    const result = validate('12.531.909-2');
+
+    expect(result.isValid && result.compact).toEqual('125319092');
+  });
+
+  it('validate:CL 7.727.230-5', () => {
+    const result = validate('CL 7.727.230-5');
+
+    expect(result.isValid && result.compact).toEqual('77272305');
+  });
+
+  it('validate:format:76086428-5', () => {
+    const result = validate(format('76086428-5'));
+
+    expect(result.isValid && result.compact).toEqual('760864285');
+  });
+
   it('validate:12531909-3', () => {
     const result = validate('12531909-3');
 
     expect(result.error).toBeInstanceOf(InvalidChecksum);
   });
 
+  it('validate:12.531.909-3', () => {
+    const result = validate('12.531.909-3');
+
+    expect(result.error).toBeInstanceOf(InvalidChecksum);
+  });
+
   it('validate:76086A28-5', () => {
     const result = validate('76086A28-5');
 
diff --git a/src/cl/rut.ts b/src/cl/rut.ts
index 06824e2f..9f75896e 100644
--- a/src/cl/rut.ts
+++ b/src/cl/rut.ts
@@ -16,7 +16,7 @@ import { strings, weightedSum } from '../util';
 import { Validator, ValidateReturn } from '../types';
 
 function clean(input: string): ReturnType<typeof strings.cleanUnicode> {
-  const [v, err] = strings.cleanUnicode(input, ' -');
+  const [v, err] = strings.cleanUnicode(input, ' -.');
 
   if (err) {
     return ['', err];
diff --git a/src/se/personnummer.spec.ts b/src/se/personnummer.spec.ts
index 688f1d22..e490eefc 100644
--- a/src/se/personnummer.spec.ts
+++ b/src/se/personnummer.spec.ts
@@ -38,6 +38,21 @@ describe('se/personnummer', () => {
     },
   );
 
+  // The separator is only written between the birth date and the birth number,
+  // it is not part of the number (Folkbokföringslagen 1991:481 §18), so the
+  // bare 10 and 12 digit forms are valid too.
+  test.each([
+    ['8803200016', '880320-0016'],
+    ['8112289874', '811228-9874'],
+    ['6709199530', '670919-9530'],
+    ['7010632391', '701063-2391'], // coordination number
+    ['119001022384', '900102+2384'], // 4digit year, no hyphen
+  ])('validate:%s', (given, want) => {
+    const result = validate(given);
+
+    expect(result.isValid && result.compact).toEqual(want);
+  });
+
   it('validate:12345678', () => {
     const result = validate('12345678');
 
@@ -49,4 +64,16 @@ describe('se/personnummer', () => {
 
     expect(result.error).toBeInstanceOf(InvalidChecksum);
   });
+
+  it('validate:8803200018', () => {
+    const result = validate('8803200018');
+
+    expect(result.error).toBeInstanceOf(InvalidChecksum);
+  });
+
+  it('validate:198803200018', () => {
+    const result = validate('198803200018');
+
+    expect(result.error).toBeInstanceOf(InvalidChecksum);
+  });
 });
diff --git a/src/se/personnummer.ts b/src/se/personnummer.ts
index a9dd6184..91ecf6ee 100644
--- a/src/se/personnummer.ts
+++ b/src/se/personnummer.ts
@@ -26,7 +26,16 @@ function clean(input: string): ReturnType<typeof strings.cleanUnicode> {
     return [value, err];
   }
 
-  const [a, b, c] = strings.splitAt(value, -5, -4);
+  // A 10 or 12 digit number is written without the separator, so put the
+  // default one back. '-' is only replaced by '+' the year someone turns 100,
+  // which the bare form cannot express.
+  const separated =
+    (value.length === 10 || value.length === 12) &&
+    !'-+'.includes(value[value.length - 5])
+      ? `${value.slice(0, -4)}-${value.slice(-4)}`
+      : value;
+
+  const [a, b, c] = strings.splitAt(separated, -5, -4);
 
   return [`${a.replace(/[-+]/g, '')}${b}${c}`, null];
 }
diff --git a/src/uy/cedula.spec.ts b/src/uy/cedula.spec.ts
index b7de6d00..8765a5b4 100644
--- a/src/uy/cedula.spec.ts
+++ b/src/uy/cedula.spec.ts
@@ -14,6 +14,19 @@ describe('uy/cedula', () => {
     expect(result.isValid && result.compact).toEqual('12345672');
   });
 
+  // The cédula is printed as a.bcd.efg-h, which is also what format() emits.
+  it('validate:1.234.567-2', () => {
+    const result = validate('1.234.567-2');
+
+    expect(result.isValid && result.compact).toEqual('12345672');
+  });
+
+  it('validate:format:12345672', () => {
+    const result = validate(format('12345672'));
+
+    expect(result.isValid && result.compact).toEqual('12345672');
+  });
+
   it('validate:1121123', () => {
     const result = validate('1121123');
 
@@ -25,4 +38,10 @@ describe('uy/cedula', () => {
 
     expect(result.error).toBeInstanceOf(InvalidChecksum);
   });
+
+  it('validate:1.234.567-3', () => {
+    const result = validate('1.234.567-3');
+
+    expect(result.error).toBeInstanceOf(InvalidChecksum);
+  });
 });
diff --git a/src/uy/cedula.ts b/src/uy/cedula.ts
index f4b81932..51cb4ae8 100644
--- a/src/uy/cedula.ts
+++ b/src/uy/cedula.ts
@@ -9,7 +9,7 @@ import { strings, weightedSum } from '../util';
 import { Validator, ValidateReturn } from '../types';
 
 function clean(input: string): ReturnType<typeof strings.cleanUnicode> {
-  return strings.cleanUnicode(input, ' -/');
+  return strings.cleanUnicode(input, ' -/.');
 }
 
 const impl: Validator = {
diff --git a/src/uy/nie.spec.ts b/src/uy/nie.spec.ts
index bec07b97..4bebdd29 100644
--- a/src/uy/nie.spec.ts
+++ b/src/uy/nie.spec.ts
@@ -14,6 +14,18 @@ describe('uy/nie', () => {
     expect(result.isValid && result.compact).toEqual('912345670');
   });
 
+  it('validate:91.234.567-0', () => {
+    const result = validate('91.234.567-0');
+
+    expect(result.isValid && result.compact).toEqual('912345670');
+  });
+
+  it('validate:format:912345670', () => {
+    const result = validate(format('912345670'));
+
+    expect(result.isValid && result.compact).toEqual('912345670');
+  });
+
   it('validate:1121123', () => {
     const result = validate('1121123');
 
@@ -25,4 +37,10 @@ describe('uy/nie', () => {
 
     expect(result.error).toBeInstanceOf(InvalidChecksum);
   });
+
+  it('validate:91.234.567-3', () => {
+    const result = validate('91.234.567-3');
+
+    expect(result.error).toBeInstanceOf(InvalidChecksum);
+  });
 });
diff --git a/src/uy/nie.ts b/src/uy/nie.ts
index 110491da..00aac8c3 100644
--- a/src/uy/nie.ts
+++ b/src/uy/nie.ts
@@ -18,7 +18,7 @@ import { strings, weightedSum } from '../util';
 import { Validator, ValidateReturn } from '../types';
 
 function clean(input: string): ReturnType<typeof strings.cleanUnicode> {
-  return strings.cleanUnicode(input, ' -');
+  return strings.cleanUnicode(input, ' -.');
 }
 
 const impl: Validator = {