English verb conjugation
CAN ROLL

Regular verb: roll - rolled - rolled

Affirmation

Simple form	V-ing form
I can roll you can roll he can roll we can roll you can roll they can roll	I can be rolling you can be rolling he 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 he 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 he 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 can't roll you can't roll he can't roll we can't roll you can't roll they can't roll	I can't be rolling you can't be rolling he can't be rolling we can't be rolling you can't be rolling they can't be rolling
Perfect	V-ing perfect
I can't have rolled you can't have rolled he can't have rolled we can't have rolled you can't have rolled they can't have rolled	I can't have been rolling you can't have been rolling he can't have been rolling we can't have been rolling you can't have been rolling they can't have been rolling

Interrogative form

Simple form	V-ing form
can I roll? can you roll? can he roll? can we roll? can you roll? can they roll?	can I be rolling? can you be rolling? can he 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 he 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 he 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't I roll? can't you roll? can't he roll? can't we roll? can't you roll? can't they roll?	can't I be rolling? can't you be rolling? can't he be rolling? can't we be rolling? can't you be rolling? can't they be rolling?
Perfect	V-ing perfect
can't I have rolled? can't you have rolled? can't he have rolled? can't we have rolled? can't you have rolled? can't they have rolled?	can't I have been rolling? can't you have been rolling? can't he have been rolling? can't we have been rolling? can't you have been rolling? can't they have been rolling?