Concordance usually involves the concordance of the value of a grammatical category between different elements of a sentence (or sometimes between sentences, as in some cases where a pronoun is needed to match its predecessor or speaker). Some categories that often trigger grammatical concordance are listed below. A rare type of chord that phonologically copies parts of the head instead of corresponding to a grammatical category.  For example, in Bainouk, “several instruments will be available, for example properly formulated company contracts, integration collective agreements, spin-off concepts or the creation of community businesses,” the lawyer said. For example, in Standard English, we can say that I am or that he is, but not “I am” or “he is”. This is because the grammar of language requires that the verb and its subject correspond personally.