English verb conjugation
CAN ROLL

Regular verb: roll - rolled - rolled

Affirmation

Simple form	V-ing form
I can roll you can roll she can roll we can roll you can roll they can roll	I can be rolling you can be rolling she can be rolling we can be rolling you can be rolling they can be rolling
Perfect	V-ing perfect
I can have rolled you can have rolled she can have rolled we can have rolled you can have rolled they can have rolled	I can have been rolling you can have been rolling she can have been rolling we can have been rolling you can have been rolling they can have been rolling

Negation

Simple form	V-ing form
I cannot roll you cannot roll she cannot roll we cannot roll you cannot roll they cannot roll	I cannot be rolling you cannot be rolling she cannot be rolling we cannot be rolling you cannot be rolling they cannot be rolling
Perfect	V-ing perfect
I cannot have rolled you cannot have rolled she cannot have rolled we cannot have rolled you cannot have rolled they cannot have rolled	I cannot have been rolling you cannot have been rolling she cannot have been rolling we cannot have been rolling you cannot have been rolling they cannot have been rolling

Interrogative form

Simple form	V-ing form
can I roll? can you roll? can she roll? can we roll? can you roll? can they roll?	can I be rolling? can you be rolling? can she be rolling? can we be rolling? can you be rolling? can they be rolling?
Perfect	V-ing perfect
can I have rolled? can you have rolled? can she have rolled? can we have rolled? can you have rolled? can they have rolled?	can I have been rolling? can you have been rolling? can she have been rolling? can we have been rolling? can you have been rolling? can they have been rolling?

Interro-negative form

Simple form	V-ing form
can I not roll? can you not roll? can she not roll? can we not roll? can you not roll? can they not roll?	can I not be rolling? can you not be rolling? can she not be rolling? can we not be rolling? can you not be rolling? can they not be rolling?
Perfect	V-ing perfect
can I not have rolled? can you not have rolled? can she not have rolled? can we not have rolled? can you not have rolled? can they not have rolled?	can I not have been rolling? can you not have been rolling? can she not have been rolling? can we not have been rolling? can you not have been rolling? can they not have been rolling?