I could joggle you could joggle she could joggle we could joggle you could joggle they could joggle
V-ing form
I could be joggling you could be joggling she could be joggling we could be joggling you could be joggling they could be joggling
Perfect
I could have joggled you could have joggled she could have joggled we could have joggled you could have joggled they could have joggled
V-ing perfect
I could have been joggling you could have been joggling she could have been joggling we could have been joggling you could have been joggling they could have been joggling
Negation
Simple form
I could not joggle you could not joggle she could not joggle we could not joggle you could not joggle they could not joggle
V-ing form
I could not be joggling you could not be joggling she could not be joggling we could not be joggling you could not be joggling they could not be joggling
Perfect
I could not have joggled you could not have joggled she could not have joggled we could not have joggled you could not have joggled they could not have joggled
V-ing perfect
I could not have been joggling you could not have been joggling she could not have been joggling we could not have been joggling you could not have been joggling they could not have been joggling
Interrogative form
Simple form
could I joggle? could you joggle? could she joggle? could we joggle? could you joggle? could they joggle?
V-ing form
could I be joggling? could you be joggling? could she be joggling? could we be joggling? could you be joggling? could they be joggling?
Perfect
could I have joggled? could you have joggled? could she have joggled? could we have joggled? could you have joggled? could they have joggled?
V-ing perfect
could I have been joggling? could you have been joggling? could she have been joggling? could we have been joggling? could you have been joggling? could they have been joggling?
Interro-negative form
Simple form
could I not joggle? could you not joggle? could she not joggle? could we not joggle? could you not joggle? could they not joggle?
V-ing form
could I not be joggling? could you not be joggling? could she not be joggling? could we not be joggling? could you not be joggling? could they not be joggling?
Perfect
could I not have joggled? could you not have joggled? could she not have joggled? could we not have joggled? could you not have joggled? could they not have joggled?
V-ing perfect
could I not have been joggling? could you not have been joggling? could she not have been joggling? could we not have been joggling? could you not have been joggling? could they not have been joggling?