English verb conjugation
CAN PILE

Regular verb: pile - piled - piled

Affirmation

Simple form	V-ing form
I can pile you can pile she can pile we can pile you can pile they can pile	I can be piling you can be piling she can be piling we can be piling you can be piling they can be piling
Perfect	V-ing perfect
I can have piled you can have piled she can have piled we can have piled you can have piled they can have piled	I can have been piling you can have been piling she can have been piling we can have been piling you can have been piling they can have been piling

Negation

Simple form	V-ing form
I can't pile you can't pile she can't pile we can't pile you can't pile they can't pile	I can't be piling you can't be piling she can't be piling we can't be piling you can't be piling they can't be piling
Perfect	V-ing perfect
I can't have piled you can't have piled she can't have piled we can't have piled you can't have piled they can't have piled	I can't have been piling you can't have been piling she can't have been piling we can't have been piling you can't have been piling they can't have been piling

Interrogative form

Simple form	V-ing form
can I pile? can you pile? can she pile? can we pile? can you pile? can they pile?	can I be piling? can you be piling? can she be piling? can we be piling? can you be piling? can they be piling?
Perfect	V-ing perfect
can I have piled? can you have piled? can she have piled? can we have piled? can you have piled? can they have piled?	can I have been piling? can you have been piling? can she have been piling? can we have been piling? can you have been piling? can they have been piling?

Interro-negative form

Simple form	V-ing form
can't I pile? can't you pile? can't she pile? can't we pile? can't you pile? can't they pile?	can't I be piling? can't you be piling? can't she be piling? can't we be piling? can't you be piling? can't they be piling?
Perfect	V-ing perfect
can't I have piled? can't you have piled? can't she have piled? can't we have piled? can't you have piled? can't they have piled?	can't I have been piling? can't you have been piling? can't she have been piling? can't we have been piling? can't you have been piling? can't they have been piling?