847. The imperfect indicative stem ends in #-bā-#, which becomes #-ba-#
in some of the persons: as,
#daba-m#, #dabā-s#, #daba-t#, #dabā-mus#, #dabā-tis#, #daba-nt#;
#ība-m#; #quība-m#. In verbs in #-ere# and #-ēre#, the suffix is
preceded by a form ending in #-ē-#: as, #regēba-m#; #monēba-m#; so also
#volēba-m# (#nōlēba-m#, #mālēba-m#), and #ferēba-m#; in verbs in #-iō#,
#-ere#, and in #-iō#, #-īre#, by a form ending in #-iē-#: as,
#capiēba-m#; #audiēba-m#; in verbs in #-āre#, by one ending in #-ā-#:
as, #laudāba-m#. In verse, verbs in #-īre# sometimes have #-ī-# before
the suffix (Plaut., Ter., Catull., Lucr., Verg., &c.): as, #audība-t#.
#āiō#, _say_, has sometimes #a͡iba-m#, &c. (787).
848. The suffix of the imperfect indicative of #sum#, _am_, is #-ā-#,
which becomes #-a-# before #-m#, #-t#, and #-nt# (35, 2, 3) the #s#
becomes #r# between the vowels (154): #era-m#, #erā-s#, #era-t#,
#erā-mus#, #erā-tis#, #era-nt#.
[Erratum:
848 ... #-m#, #-t#, and #-nt# (35, 2, 3) the #s# becomes #r#
printed as shown: missing punctuation or conjunction?]