English verb conjugation
COULD SCEND

Regular verb: scend - scended - scended

Affirmation

Simple form	V-ing form
I could scend you could scend she could scend we could scend you could scend they could scend	I could be scending you could be scending she 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 she 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 she 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 couldn't scend you couldn't scend she couldn't scend we couldn't scend you couldn't scend they couldn't scend	I couldn't be scending you couldn't be scending she couldn't be scending we couldn't be scending you couldn't be scending they couldn't be scending
Perfect	V-ing perfect
I couldn't have scended you couldn't have scended she couldn't have scended we couldn't have scended you couldn't have scended they couldn't have scended	I couldn't have been scending you couldn't have been scending she couldn't have been scending we couldn't have been scending you couldn't have been scending they couldn't have been scending

Interrogative form

Simple form	V-ing form
could I scend? could you scend? could she scend? could we scend? could you scend? could they scend?	could I be scending? could you be scending? could she 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 she 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 she 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
couldn't I scend? couldn't you scend? couldn't she scend? couldn't we scend? couldn't you scend? couldn't they scend?	couldn't I be scending? couldn't you be scending? couldn't she be scending? couldn't we be scending? couldn't you be scending? couldn't they be scending?
Perfect	V-ing perfect
couldn't I have scended? couldn't you have scended? couldn't she have scended? couldn't we have scended? couldn't you have scended? couldn't they have scended?	couldn't I have been scending? couldn't you have been scending? couldn't she have been scending? couldn't we have been scending? couldn't you have been scending? couldn't they have been scending?