sentences:  In the absence of this feature, users searching for a particular code point sequence would be unable to find other visually indistinguishable glyphs that have a different, but canonically equivalent, code point representation.Unicode provides standard normalization algorithms that produce a unique (normal) code point sequence for all sequences that are equivalent; the equivalence criteria can be either canonical (NF) or compatibility (NFK).Since one can arbitrarily choose the representative element of an equivalence class, multiple canonical forms are possible for each equivalence criterion.