There are three conjugations of weak verbs--(1) in _-an_, pret. _-de_
(_h[=i]eran_, _h[=i]erde_, 'hear'); (2) in _-ian_, pret. _-ede_
(_w[e,]nian_, _w[e,]nede_, 'wean'); (3) in _-ian_, pret. _-ode_ (_lufian_,
_lufode_, 'love'). The verbs of the first two conjugations nearly all have
a mutated vowel in the present and infinitive, which those of the third
conjugation very seldom have.