I ought to fell you ought to fell he ought to fell we ought to fell you ought to fell they ought to fell
V-ing form
I ought to be felling you ought to be felling he ought to be felling we ought to be felling you ought to be felling they ought to be felling
Perfect
I ought to have felled you ought to have felled he ought to have felled we ought to have felled you ought to have felled they ought to have felled
V-ing perfect
I ought to have been felling you ought to have been felling he ought to have been felling we ought to have been felling you ought to have been felling they ought to have been felling
Negation
Simple form
I ought not to fell you ought not to fell he ought not to fell we ought not to fell you ought not to fell they ought not to fell
V-ing form
I ought not to felling you ought not to felling he ought not to felling we ought not to felling you ought not to felling they ought not to felling
Perfect
I ought not to have felled you ought not to have felled he ought not to have felled we ought not to have felled you ought not to have felled they ought not to have felled
V-ing perfect
I ought not to have been felling you ought not to have been felling he ought not to have been felling we ought not to have been felling you ought not to have been felling they ought not to have been felling
Interrogative form
Simple form
ought to I fell? ought to you fell? ought to he fell? ought to we fell? ought to you fell? ought to they fell?
V-ing form
ought to I be felling? ought to you be felling? ought to he be felling? ought to we be felling? ought to you be felling? ought to they be felling?
Perfect
ought to I have felled? ought to you have felled? ought to he have felled? ought to we have felled? ought to you have felled? ought to they have felled?
V-ing perfect
ought to I have been felling? ought to you have been felling? ought to he have been felling? ought to we have been felling? ought to you have been felling? ought to they have been felling?
Interro-negative form
Simple form
ought I not to fell? ought you not to fell? ought he not to fell? ought we not to fell? ought you not to fell? ought they not to fell?
V-ing form
ought I not to be felling? ought you not to be felling? ought he not to be felling? ought we not to be felling? ought you not to be felling? ought they not to be felling?
Perfect
ought I not to have felled? ought you not to have felled? ought he not to have felled? ought we not to have felled? ought you not to have felled? ought they not to have felled?
V-ing perfect
ought I not to have been felling? ought you not to have been felling? ought he not to have been felling? ought we not to have been felling? ought you not to have been felling? ought they not to have been felling?