Non-contiguous sequences, repeated over a stated portion of the utterance, express what is often called grammatical agreement. If we consider Latin 'filius bonus' ‘good son’, 'filia bona' ‘good daughter’, we are led to the morphemic segments 'fili' ‘human offspring’, 'bon' ‘good’. The remining phonemes in the first utterance, '… us … us', are not two independent sequences […]; the two parts are clearly dependent on each other and together constitute one broken morpheme, meaning male […]. Similarly '… a … a' is a single morphemic segment, meaning female. In 'victrix bona' ‘good victor (f.)’ (as against 'victor bonus' ‘good victor (m.)’) we have '… ix … a' as a morphemic segment meaning female; the two separated parts of the morphemic segment need not be identical.
- Harris (1951), a pag.165

[…] we see that grammatical features which are usually called agreement can be described as discontinuous morphemic segments whose various parts are attached to various other morphemic segments.
- Harris (1951), a pag.167