A more complicated case occurs in the pairs of words or utterances 'conceive-receive', 'concur-recur', 'confer-refer', etc. We never get 'ceive' by itself, but every phoneme sequence with which 'ceive' occurs, appears also with other bound forms which in turn occur with one or more of the sequences with which ceive occurs: 'perceive', 'deceive'; 'deduct', 'conduct'; 'perjure', 'conjure'; 'persist', 'desist', 'consist', 'resist', 'assist'. There is thus discovered a family of initial bound forms (prefixes) and a family of non-initial bound forms (stems), between the members of which families this relation in general holds. Each one of these prefixes occurs with several of these stems, and vice versa.
- Harris (1951), Pag. 161