There are quite a few third conjugation īo verbs that are conjugated as third conjugation verbs (for the most part) but that resemble some fourth conjugation verbs.

capere (to seize)

In the present indicative active tense:

capiō

capīs

capit

capimus

capitis

capiunt

In the present indicative passive:

capior

caperis

capitur

capimur

capīminī

capiuntur