English verb conjugation
OUGHT TO LETTER

Regular verb: letter - lettered - lettered

Affirmation

Simple form	V-ing form
I ought to letter you ought to letter he ought to letter we ought to letter you ought to letter they ought to letter	I ought to be lettering you ought to be lettering he ought to be lettering we ought to be lettering you ought to be lettering they ought to be lettering
Perfect	V-ing perfect
I ought to have lettered you ought to have lettered he ought to have lettered we ought to have lettered you ought to have lettered they ought to have lettered	I ought to have been lettering you ought to have been lettering he ought to have been lettering we ought to have been lettering you ought to have been lettering they ought to have been lettering

Negation

Simple form	V-ing form
I ought not to letter you ought not to letter he ought not to letter we ought not to letter you ought not to letter they ought not to letter	I ought not to lettering you ought not to lettering he ought not to lettering we ought not to lettering you ought not to lettering they ought not to lettering
Perfect	V-ing perfect
I ought not to have lettered you ought not to have lettered he ought not to have lettered we ought not to have lettered you ought not to have lettered they ought not to have lettered	I ought not to have been lettering you ought not to have been lettering he ought not to have been lettering we ought not to have been lettering you ought not to have been lettering they ought not to have been lettering

Interrogative form

Simple form	V-ing form
ought to I letter? ought to you letter? ought to he letter? ought to we letter? ought to you letter? ought to they letter?	ought to I be lettering? ought to you be lettering? ought to he be lettering? ought to we be lettering? ought to you be lettering? ought to they be lettering?
Perfect	V-ing perfect
ought to I have lettered? ought to you have lettered? ought to he have lettered? ought to we have lettered? ought to you have lettered? ought to they have lettered?	ought to I have been lettering? ought to you have been lettering? ought to he have been lettering? ought to we have been lettering? ought to you have been lettering? ought to they have been lettering?

Interro-negative form

Simple form	V-ing form
ought I not to letter? ought you not to letter? ought he not to letter? ought we not to letter? ought you not to letter? ought they not to letter?	ought I not to be lettering? ought you not to be lettering? ought he not to be lettering? ought we not to be lettering? ought you not to be lettering? ought they not to be lettering?
Perfect	V-ing perfect
ought I not to have lettered? ought you not to have lettered? ought he not to have lettered? ought we not to have lettered? ought you not to have lettered? ought they not to have lettered?	ought I not to have been lettering? ought you not to have been lettering? ought he not to have been lettering? ought we not to have been lettering? ought you not to have been lettering? ought they not to have been lettering?