moneō, advisemonēremonuīmonitus
placeō, am pleasingplacēreplacuīplacitus

So the compounds com-placeō and per-placeō; dis-pliceō has i for a throughout.

taceō, hold my tonguetacēretacuītacitus adjective

The compound re-ticeō has i for a and no perfect participle.

teneō, holdtenēretenuī-tentus

Compounds have i for e in the present and perfect: as, dē-tineō, dē-tinuī, dē-tentus.

terreō, scareterrēreterruīterritus
torreō, roasttorrēretorruītostus

[1005.] (2 b.) The following verb in -ēre has the perfect stem in -u- ([874]), and the perfect participle in -sus ([912]):

cēnseō, count, ratecēnsērecēnsuīcēnsus

[1006.] (3.) The following verbs in -ēre have the perfect stem in -u- ([874]), and no perfect participle ([907]):