Plan: Structure of English

suffixal derivative, the adjective uneatable however possesses a different structure: the two ICs are un + eatable which shows that this adjective is a prefixal derivative though the unit has both a prefix and a suffix.
S. S. Khidekel describes numerous cases when identical morphemic structure of different words may be insufficient proof of their identical pattern of word formation structure, which can be revealed only by I.C. analysis. Thus, comparing snow-covered and blue-eyed we observe that both words contain two root morphemes and one derivational morpheme. I.C. analysis shows that whereas snow-covered may be considered a compound consisting of two stems snow + covered, blue-eyed is a suffixal derivative as the underlying structure is different: (blue + eye) + ed.
Thus I.C. analysis is used in lexicological investigations to discover the word-formation structure.