English verb conjugation
COULD COMPREHEND

Regular verb: comprehend - comprehended - comprehended

Affirmation

Simple form	V-ing form
I could comprehend you could comprehend he could comprehend we could comprehend you could comprehend they could comprehend	I could be comprehending you could be comprehending he could be comprehending we could be comprehending you could be comprehending they could be comprehending
Perfect	V-ing perfect
I could have comprehended you could have comprehended he could have comprehended we could have comprehended you could have comprehended they could have comprehended	I could have been comprehending you could have been comprehending he could have been comprehending we could have been comprehending you could have been comprehending they could have been comprehending

Negation

Simple form	V-ing form
I could not comprehend you could not comprehend he could not comprehend we could not comprehend you could not comprehend they could not comprehend	I could not be comprehending you could not be comprehending he could not be comprehending we could not be comprehending you could not be comprehending they could not be comprehending
Perfect	V-ing perfect
I could not have comprehended you could not have comprehended he could not have comprehended we could not have comprehended you could not have comprehended they could not have comprehended	I could not have been comprehending you could not have been comprehending he could not have been comprehending we could not have been comprehending you could not have been comprehending they could not have been comprehending

Interrogative form

Simple form	V-ing form
could I comprehend? could you comprehend? could he comprehend? could we comprehend? could you comprehend? could they comprehend?	could I be comprehending? could you be comprehending? could he be comprehending? could we be comprehending? could you be comprehending? could they be comprehending?
Perfect	V-ing perfect
could I have comprehended? could you have comprehended? could he have comprehended? could we have comprehended? could you have comprehended? could they have comprehended?	could I have been comprehending? could you have been comprehending? could he have been comprehending? could we have been comprehending? could you have been comprehending? could they have been comprehending?

Interro-negative form

Simple form	V-ing form
could I not comprehend? could you not comprehend? could he not comprehend? could we not comprehend? could you not comprehend? could they not comprehend?	could I not be comprehending? could you not be comprehending? could he not be comprehending? could we not be comprehending? could you not be comprehending? could they not be comprehending?
Perfect	V-ing perfect
could I not have comprehended? could you not have comprehended? could he not have comprehended? could we not have comprehended? could you not have comprehended? could they not have comprehended?	could I not have been comprehending? could you not have been comprehending? could he not have been comprehending? could we not have been comprehending? could you not have been comprehending? could they not have been comprehending?