Posse - to be able
Potero, poteris, poterit, poterimus, poteritis, poterunt
Esse - to be
Ero, eris, erit, erimus, eritis, erunt
Ferre - bear, bring, carry
Feram, feres, feret, feremus, feretis, ferent
Volle - to want
Volam, voles, volet, volemus, voletis, volent
Nolle - not to want
Nolam, noles, nolet, nolemus, noletis, nolent
Ire - to go
ibo, ibis, ibit, ibimus, ibitis, ibunt