ABSTRACT
For the most part, vowels other than fa/ remain unmodified in Changed forms. There are two systematic classes of exceptions to this generalization, however. First, certain occurrences of /i/ and /o/ before /y/ and /w/ become /e/ in Initial Change. Cases of this type will be discussed in the following section. More interesting is the fact that occurrences of /i/ and /a/ which are subject to syncope are also replaced by /e/ in Initial Change. (There are no examples in which syncopating /of occurs in a position where it could be affected by Change.)
Examples of invariant /i/, /a/, /o/, and /e/ are given in (17)-(21). In each case I give first an unprefixed form in which the first vowel of the stem would undergo syncope if it were unstressable, then a form of one of the Changed modes. In order to bring out the contrast with syncopating /i/ and /a/, I have chosen examples in which the first vowel of the stem precedes /hC/ or /sC/, since these are the environments in which syncopating vowels other than fa/ typically occur; but non-mutating vowels are not restricted to these contexts.
