English verb conjugation
COULD BICYCLE

Regular verb: bicycle - bicycled - bicycled

Affirmation

Simple form	V-ing form
I could bicycle you could bicycle she could bicycle we could bicycle you could bicycle they could bicycle	I could be bicycling you could be bicycling she could be bicycling we could be bicycling you could be bicycling they could be bicycling
Perfect	V-ing perfect
I could have bicycled you could have bicycled she could have bicycled we could have bicycled you could have bicycled they could have bicycled	I could have been bicycling you could have been bicycling she could have been bicycling we could have been bicycling you could have been bicycling they could have been bicycling

Negation

Simple form	V-ing form
I couldn't bicycle you couldn't bicycle she couldn't bicycle we couldn't bicycle you couldn't bicycle they couldn't bicycle	I couldn't be bicycling you couldn't be bicycling she couldn't be bicycling we couldn't be bicycling you couldn't be bicycling they couldn't be bicycling
Perfect	V-ing perfect
I couldn't have bicycled you couldn't have bicycled she couldn't have bicycled we couldn't have bicycled you couldn't have bicycled they couldn't have bicycled	I couldn't have been bicycling you couldn't have been bicycling she couldn't have been bicycling we couldn't have been bicycling you couldn't have been bicycling they couldn't have been bicycling

Interrogative form

Simple form	V-ing form
could I bicycle? could you bicycle? could she bicycle? could we bicycle? could you bicycle? could they bicycle?	could I be bicycling? could you be bicycling? could she be bicycling? could we be bicycling? could you be bicycling? could they be bicycling?
Perfect	V-ing perfect
could I have bicycled? could you have bicycled? could she have bicycled? could we have bicycled? could you have bicycled? could they have bicycled?	could I have been bicycling? could you have been bicycling? could she have been bicycling? could we have been bicycling? could you have been bicycling? could they have been bicycling?

Interro-negative form

Simple form	V-ing form
couldn't I bicycle? couldn't you bicycle? couldn't she bicycle? couldn't we bicycle? couldn't you bicycle? couldn't they bicycle?	couldn't I be bicycling? couldn't you be bicycling? couldn't she be bicycling? couldn't we be bicycling? couldn't you be bicycling? couldn't they be bicycling?
Perfect	V-ing perfect
couldn't I have bicycled? couldn't you have bicycled? couldn't she have bicycled? couldn't we have bicycled? couldn't you have bicycled? couldn't they have bicycled?	couldn't I have been bicycling? couldn't you have been bicycling? couldn't she have been bicycling? couldn't we have been bicycling? couldn't you have been bicycling? couldn't they have been bicycling?