23.3 Provide the Missing Principal Parts

Fill in the missing principal parts. For second conjugation verbs, use the key at the bottom to insert the long a, e, i, o, and u of the infinitive. Click "Check" to see how you did, or click "Hint" to receive the next letter in an answer.
iī or -īvī
abeōabiī or -īvī
adeōadiī or -īvī
exeōexiī or -īvī
ineōiniī or -īvī
pereō or -īvī
redeōrediī or -īvī
subeō or -īvī
trānseō or -īvī
ferō
adferō
auferō
cōnferō
sē cōnferre---------
īnferō
offerō
referō
tollō