These six exceptions are ced/er , cess - sed/er , sess - mov/er , mot - ten/er , tent - vert/er , vers - veni/r , vent - and the verbs formed out of them using prefixes .

These six exceptions are : ced/er , cess - sed/er , sess - mov/er , mot - ten/er , tent - vert/er , vers - veni/r , vent - and the verbs formed from them with prefixes .
