The second variety of nasal substitution, limited to bilabial and velar consonants, occurs across word and morpheme boundaries: "kalap pahn" is pronounced as if it were "kalam pahn" ("always will be"); "Soulik kin soupisek" is pronounced as if it were "souling kin soupisek" ("Soulik is busy"). This second variety of the nasal substitution process is phonemically more productive than the first: it includes all results possible in the first variety, as well as additional cluster combinations, indicated in green below. Some alveolar pairs produce an intervening vowel, represented as V below. Not all clusters are possible, and not all are assimilative, however.