English verb conjugation
CAN HEAP

Regular verb: heap - heaped - heaped

Affirmation

Simple form	V-ing form
I can heap you can heap he can heap we can heap you can heap they can heap	I can be heaping you can be heaping he can be heaping we can be heaping you can be heaping they can be heaping
Perfect	V-ing perfect
I can have heaped you can have heaped he can have heaped we can have heaped you can have heaped they can have heaped	I can have been heaping you can have been heaping he can have been heaping we can have been heaping you can have been heaping they can have been heaping

Negation

Simple form	V-ing form
I cannot heap you cannot heap he cannot heap we cannot heap you cannot heap they cannot heap	I cannot be heaping you cannot be heaping he cannot be heaping we cannot be heaping you cannot be heaping they cannot be heaping
Perfect	V-ing perfect
I cannot have heaped you cannot have heaped he cannot have heaped we cannot have heaped you cannot have heaped they cannot have heaped	I cannot have been heaping you cannot have been heaping he cannot have been heaping we cannot have been heaping you cannot have been heaping they cannot have been heaping

Interrogative form

Simple form	V-ing form
can I heap? can you heap? can he heap? can we heap? can you heap? can they heap?	can I be heaping? can you be heaping? can he be heaping? can we be heaping? can you be heaping? can they be heaping?
Perfect	V-ing perfect
can I have heaped? can you have heaped? can he have heaped? can we have heaped? can you have heaped? can they have heaped?	can I have been heaping? can you have been heaping? can he have been heaping? can we have been heaping? can you have been heaping? can they have been heaping?

Interro-negative form

Simple form	V-ing form
can I not heap? can you not heap? can he not heap? can we not heap? can you not heap? can they not heap?	can I not be heaping? can you not be heaping? can he not be heaping? can we not be heaping? can you not be heaping? can they not be heaping?
Perfect	V-ing perfect
can I not have heaped? can you not have heaped? can he not have heaped? can we not have heaped? can you not have heaped? can they not have heaped?	can I not have been heaping? can you not have been heaping? can he not have been heaping? can we not have been heaping? can you not have been heaping? can they not have been heaping?