sentences:  For consistency with some older standards, Unicode provides single code points for many characters that could be viewed as modified forms of other characters (such as U+00F1 for "ñ" or U+00C5 for "Å") or as combinations of two or more characters (such as U+FB00 for the ligature "ﬀ" or U+0132 for the Dutch letter "IJ")
  
  For consistency with other standards, and for greater flexibility, Unicode also provides codes for many elements that are not used on their own, but are meant instead to modify or combine with a preceding base character.Examples of these combining characters are the combining tilde and the Japanese diacritic dakuten ("◌゛", U+3099).In the context of Unicode, character composition is the process of replacing the code points of a base letter followed by one or more combining characters into a single precomposed character; and character decomposition is the opposite process.