I could trudge you could trudge she could trudge we could trudge you could trudge they could trudge
V-ing form
I could be trudging you could be trudging she could be trudging we could be trudging you could be trudging they could be trudging
Perfect
I could have trudged you could have trudged she could have trudged we could have trudged you could have trudged they could have trudged
V-ing perfect
I could have been trudging you could have been trudging she could have been trudging we could have been trudging you could have been trudging they could have been trudging
Negation
Simple form
I could not trudge you could not trudge she could not trudge we could not trudge you could not trudge they could not trudge
V-ing form
I could not be trudging you could not be trudging she could not be trudging we could not be trudging you could not be trudging they could not be trudging
Perfect
I could not have trudged you could not have trudged she could not have trudged we could not have trudged you could not have trudged they could not have trudged
V-ing perfect
I could not have been trudging you could not have been trudging she could not have been trudging we could not have been trudging you could not have been trudging they could not have been trudging
Interrogative form
Simple form
could I trudge? could you trudge? could she trudge? could we trudge? could you trudge? could they trudge?
V-ing form
could I be trudging? could you be trudging? could she be trudging? could we be trudging? could you be trudging? could they be trudging?
Perfect
could I have trudged? could you have trudged? could she have trudged? could we have trudged? could you have trudged? could they have trudged?
V-ing perfect
could I have been trudging? could you have been trudging? could she have been trudging? could we have been trudging? could you have been trudging? could they have been trudging?
Interro-negative form
Simple form
could I not trudge? could you not trudge? could she not trudge? could we not trudge? could you not trudge? could they not trudge?
V-ing form
could I not be trudging? could you not be trudging? could she not be trudging? could we not be trudging? could you not be trudging? could they not be trudging?
Perfect
could I not have trudged? could you not have trudged? could she not have trudged? could we not have trudged? could you not have trudged? could they not have trudged?
V-ing perfect
could I not have been trudging? could you not have been trudging? could she not have been trudging? could we not have been trudging? could you not have been trudging? could they not have been trudging?