“…In these words, slV-references a kind of 'slipperiness' because the words that contain this phoneme cluster are associated. Similar examples such as the onset tw-'twisting motion' of twitch, twist, twine, etc., or the final cluster -ack 'striking sound' as in clack, crack, flack, are legion 6 • Submorphemic units (Zelinsky-Wibbelt 1983;Wescott 1976) have also been referred to in the literature as root-forming morphemes (Bloomfield, L. 1933:244-6, Pike 1943:77 passim, Bloomfield, M. 1953 and phon(a)esthemes (Firth 1964, Householder 1946, Wescott 1976. Structuralist and generative analyses generally do not treat these units as morphemes due to their limited ability to combine with free forms (Nida 1949:61) or with forms that occur in other combinations.…”