English verb conjugation
CAN FOUL

Regular verb: foul - fouled - fouled

Affirmation

Simple form	V-ing form
I can foul you can foul he can foul we can foul you can foul they can foul	I can be fouling you can be fouling he can be fouling we can be fouling you can be fouling they can be fouling
Perfect	V-ing perfect
I can have fouled you can have fouled he can have fouled we can have fouled you can have fouled they can have fouled	I can have been fouling you can have been fouling he can have been fouling we can have been fouling you can have been fouling they can have been fouling

Negation

Simple form	V-ing form
I can't foul you can't foul he can't foul we can't foul you can't foul they can't foul	I can't be fouling you can't be fouling he can't be fouling we can't be fouling you can't be fouling they can't be fouling
Perfect	V-ing perfect
I can't have fouled you can't have fouled he can't have fouled we can't have fouled you can't have fouled they can't have fouled	I can't have been fouling you can't have been fouling he can't have been fouling we can't have been fouling you can't have been fouling they can't have been fouling

Interrogative form

Simple form	V-ing form
can I foul? can you foul? can he foul? can we foul? can you foul? can they foul?	can I be fouling? can you be fouling? can he be fouling? can we be fouling? can you be fouling? can they be fouling?
Perfect	V-ing perfect
can I have fouled? can you have fouled? can he have fouled? can we have fouled? can you have fouled? can they have fouled?	can I have been fouling? can you have been fouling? can he have been fouling? can we have been fouling? can you have been fouling? can they have been fouling?

Interro-negative form

Simple form	V-ing form
can't I foul? can't you foul? can't he foul? can't we foul? can't you foul? can't they foul?	can't I be fouling? can't you be fouling? can't he be fouling? can't we be fouling? can't you be fouling? can't they be fouling?
Perfect	V-ing perfect
can't I have fouled? can't you have fouled? can't he have fouled? can't we have fouled? can't you have fouled? can't they have fouled?	can't I have been fouling? can't you have been fouling? can't he have been fouling? can't we have been fouling? can't you have been fouling? can't they have been fouling?