 English cardinal numbers are sometimes used, e.g., "four-gram", "five-gram", and so on.In computational biology, a polymer or oligomer of a known size is called a "k"-mer instead of an "n"-gram, with specific names using Greek numerical prefixes such as "monomer", "dimer", "trimer", "tetramer", "pentamer", etc., or English cardinal numbers, "one-mer", "two-mer", "three-mer", etc.An "n"-gram model is a type of probabilistic language model for predicting the next item in such a sequence in the form of a ("n" − 1)–order Markov model.