English verb conjugation
OUGHT TO CONCENTER

Regular verb: concenter - concentered - concentered

Affirmation

Simple form	V-ing form
I ought to concenter you ought to concenter he ought to concenter we ought to concenter you ought to concenter they ought to concenter	I ought to be concentering you ought to be concentering he ought to be concentering we ought to be concentering you ought to be concentering they ought to be concentering
Perfect	V-ing perfect
I ought to have concentered you ought to have concentered he ought to have concentered we ought to have concentered you ought to have concentered they ought to have concentered	I ought to have been concentering you ought to have been concentering he ought to have been concentering we ought to have been concentering you ought to have been concentering they ought to have been concentering

Negation

Simple form	V-ing form
I ought not to concenter you ought not to concenter he ought not to concenter we ought not to concenter you ought not to concenter they ought not to concenter	I ought not to concentering you ought not to concentering he ought not to concentering we ought not to concentering you ought not to concentering they ought not to concentering
Perfect	V-ing perfect
I ought not to have concentered you ought not to have concentered he ought not to have concentered we ought not to have concentered you ought not to have concentered they ought not to have concentered	I ought not to have been concentering you ought not to have been concentering he ought not to have been concentering we ought not to have been concentering you ought not to have been concentering they ought not to have been concentering

Interrogative form

Simple form	V-ing form
ought to I concenter? ought to you concenter? ought to he concenter? ought to we concenter? ought to you concenter? ought to they concenter?	ought to I be concentering? ought to you be concentering? ought to he be concentering? ought to we be concentering? ought to you be concentering? ought to they be concentering?
Perfect	V-ing perfect
ought to I have concentered? ought to you have concentered? ought to he have concentered? ought to we have concentered? ought to you have concentered? ought to they have concentered?	ought to I have been concentering? ought to you have been concentering? ought to he have been concentering? ought to we have been concentering? ought to you have been concentering? ought to they have been concentering?

Interro-negative form

Simple form	V-ing form
ought I not to concenter? ought you not to concenter? ought he not to concenter? ought we not to concenter? ought you not to concenter? ought they not to concenter?	ought I not to be concentering? ought you not to be concentering? ought he not to be concentering? ought we not to be concentering? ought you not to be concentering? ought they not to be concentering?
Perfect	V-ing perfect
ought I not to have concentered? ought you not to have concentered? ought he not to have concentered? ought we not to have concentered? ought you not to have concentered? ought they not to have concentered?	ought I not to have been concentering? ought you not to have been concentering? ought he not to have been concentering? ought we not to have been concentering? ought you not to have been concentering? ought they not to have been concentering?