 Where grammaticalization takes place, nouns and verbs which carry certain lexical meaning develop over time into grammatical items such as auxiliaries, case markers, inflections, and sentence connectives.A well-known example of grammaticalization is that of the process in which the lexical cluster "let us", for example in "let us eat", is reduced to "let's" as in "let's you and me fight".Here, the phrase has lost its lexical meaning of "allow us" and has become an auxiliary introducing a suggestion, the pronoun 'us' reduced first to a suffix and then to an unanalyzed phoneme.