436 7 Verbal morphology
Also relevant to subject suffixes is rebracketing of stem plus suffix
combinations to create ablaut domains. For most verbs, ablaut is limited to
stems. However, light V-final verbs, i.e. -v(C)Cu-, notably those of the α/ι
subclass, combine with subject suffixes to create C-final sequences that serve
as domains for certain ablaut formatives, specifically χ-pcl (lengthening) of
the Resit stem, which changes /as/ to a, and e-pclf of the PerfN, which
changes /ae/ to e. Thus ί-jla 'he went', ending in a full V, cannot implement
these formatives: Consider Resit i-jlo (with audible X"PCU PerfN 1-jla
(indistinguishable from the PerfP). By contrast, when PerfP -sjla- combines
with 3MaPl -aen to give ajlae-n 'they-Ma went', this creates a vCCasC
sequence that permits audible lengthening (Resit) or switch to e (PerfN) of the
as, hence 3MaPl Resit ajld-n and 3MaPl PerfN ajle-n. This also applies with
C-initial suffix: 3FePl Resit ajld-naet, 3FePl PerfN ajle-nast. Since PerfN
e-pclf has no audible effect on e.g. unsegmentable -vCCvCvC- stems, it is
clear that only the [ajlae-n] portion of 3FePI PerfP ajlae-nast, is the domain of
ablaut. Therefore we have a special rebracketing, e.g. 3MaPl [sjlae-n] and
3FePl [ajlae-njaet, where the brackets delimit the domain of ablaut. Inclusion of
(part of) a subject suffix in an ablaut domain applies only to light V-final verb
stems.
7.4.1.4 3MaSg i- versus 0-
When the 3MaSg prefix i- is followed by a stem-initial V, as in most (but not
all) cases, the two V's contract. The very common combination with stem-
initial /a/ is realized as i-, a special case of VV-Contraction (§3.2.3.1).
However, the prefix is realized as 0- before other V's including the other short
vowel as (445).
(445) 3MaSg Forms
a. /i-s/ > i-
/i-awaet/ > 1-waet 'he hit' (PerfP)
/i-ajjaes/ > 1-jjaes 'he entered' (PerfP)
b. /[-/ > 0 before other V
/i-seblalaev/ > 0-aeblalaeY 'he gaped' (PerfP)
/i-awsn/ > 0-awsn 'he goes up' (Shlmpf)
/i-ojasy / > 0-ojasy 'he tied' (PerfP)
/i-ujaj/ > 0-ÜJ3J 'he went far away' (PerfP)
/i-idan/ I > 0-ldan 'it is counted' (Shlmpf)
When a verb begins with underlying hi that would (in the absence of a
prefix) surface as phonetic [ae] due to a following BLC, the vowel is
nonetheless treated in other phonological respects as /a/, and therefore