Stoppp using trippple consonants

tests/corelib_strong/string_test.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "package:expect/expect.dart";
 
 void main() {
   testOutOfRange();
   testIllegalArgument();
   testConcat();
@@ skipping 312 matching lines @@
   Expect.isFalse("str".contains("string", 0));
 
   Expect.isTrue("str".contains("", 0));
   Expect.isTrue("".contains("", 0));
   Expect.isFalse("".contains("s", 0));
 }
 
 void testReplaceAll() {
   Expect.equals("AtoBtoCDtoE", "AfromBfromCDfromE".replaceAll("from", "to"));
 
-  // Test with the replaced string at the begining.
+  // Test with the replaced string at the beginning.
   Expect.equals("toABtoCDtoE", "fromABfromCDfromE".replaceAll("from", "to"));
 
   // Test with the replaced string at the end.
   Expect.equals(
       "toABtoCDtoEto", "fromABfromCDfromEfrom".replaceAll("from", "to"));
 
   // Test when there are no occurence of the string to replace.
   Expect.equals("ABC", "ABC".replaceAll("from", "to"));
 
   // Test when the string to change is the empty string.
@@ skipping 141 matching lines @@
   Expect.equals('a', ''.padRight(1, 'a'));
   Expect.equals('aaaaa', ''.padRight(5, 'a'));
   Expect.equals('', ''.padRight(-2, 'a'));
 
   Expect.equals('xyzxyzxyzxyzxyz', ''.padRight(5, 'xyz'));
   Expect.equals('axyzxyzxyzxyz', 'a'.padRight(5, 'xyz'));
   Expect.equals('aaxyzxyzxyz', 'aa'.padRight(5, 'xyz'));
   Expect.equals('aa\u{10002}\u{10002}\u{10002}', 'aa'.padRight(5, '\u{10002}'));
   Expect.equals('a', 'a'.padRight(10, ''));
 }