fa In both the Prefix and Suffix conjugations of ‘Afar the distinction between perfect and non-perfect aspects is generally maintained in main verb forms. Mood forms, such as the imperative and jussive, are, however, exceptions to this. The morphological means whereby this aspect distinction is realized is essentially different in the two conjugations although historically one of these means derives from the other. One accidental result of this historical derivation is that two affixes of identical form have come to occupy comparable locations in the structure of the verb. One of them occurs in certain Prefix verb forms, the other in certain Suffix verb forms. In most constructions the functions of these affixes are quite distinct. There are, however, certain constructions in the two conjugations, which clearly correspond functionally to each other, but in which the distribution of the two affixes is anomalous. In this paper the questions are looked at in the light of an internal reconstruction of some areas of the verbal system, with the result that a hypothesis of partial (contextually determined) restructuring is presented as the most plausible means of explaining the anomalies.