I ought to comprehend you ought to comprehend he ought to comprehend we ought to comprehend you ought to comprehend they ought to comprehend
V-ing form
I ought to be comprehending you ought to be comprehending he ought to be comprehending we ought to be comprehending you ought to be comprehending they ought to be comprehending
Perfect
I ought to have comprehended you ought to have comprehended he ought to have comprehended we ought to have comprehended you ought to have comprehended they ought to have comprehended
V-ing perfect
I ought to have been comprehending you ought to have been comprehending he ought to have been comprehending we ought to have been comprehending you ought to have been comprehending they ought to have been comprehending
Negation
Simple form
I ought not to comprehend you ought not to comprehend he ought not to comprehend we ought not to comprehend you ought not to comprehend they ought not to comprehend
V-ing form
I ought not to comprehending you ought not to comprehending he ought not to comprehending we ought not to comprehending you ought not to comprehending they ought not to comprehending
Perfect
I ought not to have comprehended you ought not to have comprehended he ought not to have comprehended we ought not to have comprehended you ought not to have comprehended they ought not to have comprehended
V-ing perfect
I ought not to have been comprehending you ought not to have been comprehending he ought not to have been comprehending we ought not to have been comprehending you ought not to have been comprehending they ought not to have been comprehending
Interrogative form
Simple form
ought to I comprehend? ought to you comprehend? ought to he comprehend? ought to we comprehend? ought to you comprehend? ought to they comprehend?
V-ing form
ought to I be comprehending? ought to you be comprehending? ought to he be comprehending? ought to we be comprehending? ought to you be comprehending? ought to they be comprehending?
Perfect
ought to I have comprehended? ought to you have comprehended? ought to he have comprehended? ought to we have comprehended? ought to you have comprehended? ought to they have comprehended?
V-ing perfect
ought to I have been comprehending? ought to you have been comprehending? ought to he have been comprehending? ought to we have been comprehending? ought to you have been comprehending? ought to they have been comprehending?
Interro-negative form
Simple form
ought I not to comprehend? ought you not to comprehend? ought he not to comprehend? ought we not to comprehend? ought you not to comprehend? ought they not to comprehend?
V-ing form
ought I not to be comprehending? ought you not to be comprehending? ought he not to be comprehending? ought we not to be comprehending? ought you not to be comprehending? ought they not to be comprehending?
Perfect
ought I not to have comprehended? ought you not to have comprehended? ought he not to have comprehended? ought we not to have comprehended? ought you not to have comprehended? ought they not to have comprehended?
V-ing perfect
ought I not to have been comprehending? ought you not to have been comprehending? ought he not to have been comprehending? ought we not to have been comprehending? ought you not to have been comprehending? ought they not to have been comprehending?