English verb conjugation
COULD SCEND

Regular verb: scend - scended - scended

Affirmation

Simple form	V-ing form
I could scend you could scend he could scend we could scend you could scend they could scend	I could be scending you could be scending he could be scending we could be scending you could be scending they could be scending
Perfect	V-ing perfect
I could have scended you could have scended he could have scended we could have scended you could have scended they could have scended	I could have been scending you could have been scending he could have been scending we could have been scending you could have been scending they could have been scending

Negation

Simple form	V-ing form
I could not scend you could not scend he could not scend we could not scend you could not scend they could not scend	I could not be scending you could not be scending he could not be scending we could not be scending you could not be scending they could not be scending
Perfect	V-ing perfect
I could not have scended you could not have scended he could not have scended we could not have scended you could not have scended they could not have scended	I could not have been scending you could not have been scending he could not have been scending we could not have been scending you could not have been scending they could not have been scending

Interrogative form

Simple form	V-ing form
could I scend? could you scend? could he scend? could we scend? could you scend? could they scend?	could I be scending? could you be scending? could he be scending? could we be scending? could you be scending? could they be scending?
Perfect	V-ing perfect
could I have scended? could you have scended? could he have scended? could we have scended? could you have scended? could they have scended?	could I have been scending? could you have been scending? could he have been scending? could we have been scending? could you have been scending? could they have been scending?

Interro-negative form

Simple form	V-ing form
could I not scend? could you not scend? could he not scend? could we not scend? could you not scend? could they not scend?	could I not be scending? could you not be scending? could he not be scending? could we not be scending? could you not be scending? could they not be scending?
Perfect	V-ing perfect
could I not have scended? could you not have scended? could he not have scended? could we not have scended? could you not have scended? could they not have scended?	could I not have been scending? could you not have been scending? could he not have been scending? could we not have been scending? could you not have been scending? could they not have been scending?