amo, amare, amavi, amatum

Formed by taking the stem (e.g. "am-") + the connecting vowel (-a-) + the ending.

Note that -a- + -o results in a single long -o at the end of the first person singular.

debeo, debere, debui, debitum

The long -e- is kept throughout this conjugation.

duco, ducere, duxi, ductum

The short -e- usually becomes a short -i- (except in the third person singular when the -e- becomes a short -u- before -nt.

capio, capere, cepi, captum

audio, audire, auivi, auditum