sentences:  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.In general, precomposed characters are defined to be canonically equivalent to the sequence of their base letter and subsequent combining diacritic marks, in whatever order these may occur.Some scripts regularly use multiple combining marks that do not, in general, interact typographically, and do not have precomposed characters for the combinations.