A word can be changed to another word by a one-character substitution. Assume that a dictionary of five-letter words exists. Give an algorithm to determine whether a word A can be transformed to a word...

A word can be changed to another word by a one-character substitution. Assume that a dictionary of five-letter words exists. Give an algorithm to determine whether a word A can be transformed to a word B by a series of one-character substitutions, and if so, outputs the corresponding sequence of words. For example, bleed converts to blood by the sequence bleed, blend, blond, blood.