Found:

Class I/II affix

PHONOLOGY/MORPHOLOGY: classification of (English) affixes. Class I and Class II affixes can be distinguished in terms of their different phonological and morphological properties. EXAMPLE: the English Class I affixes can cause stress shift (párent-paréntal, prodúctive-productívity), while their class II counterparts are stress neutral (párent-párenthood, prodúctive-prodúctiveness). Furthermore, class I affixes may appear inside class II affixes, but not vice versa (*hopefulity). This generalization is usually referred to as the Affix Ordering Generalization.
The distinction between Class I and Class II affixes is equivalent to that between formative-boundary and word-boundary affixes (Chomsky & Halle, 1968), Level I and Level II affixes (Pesetsky 1979, Kiparsky 1982), and Stratum I and Stratum II affixes (Halle & Vergnaud 1987).

LIT.	Chomsky, N. and M. Halle (1968) Halle, M. & J.-R. Vergnaud (1987) Kiparsky, P. (1982) Pesetsky, D. (1979)