English verb conjugation
CAN STOOL

Regular verb: stool - stooled - stooled

Affirmation

Simple form	V-ing form
I can stool you can stool he can stool we can stool you can stool they can stool	I can be stooling you can be stooling he can be stooling we can be stooling you can be stooling they can be stooling
Perfect	V-ing perfect
I can have stooled you can have stooled he can have stooled we can have stooled you can have stooled they can have stooled	I can have been stooling you can have been stooling he can have been stooling we can have been stooling you can have been stooling they can have been stooling

Negation

Simple form	V-ing form
I can't stool you can't stool he can't stool we can't stool you can't stool they can't stool	I can't be stooling you can't be stooling he can't be stooling we can't be stooling you can't be stooling they can't be stooling
Perfect	V-ing perfect
I can't have stooled you can't have stooled he can't have stooled we can't have stooled you can't have stooled they can't have stooled	I can't have been stooling you can't have been stooling he can't have been stooling we can't have been stooling you can't have been stooling they can't have been stooling

Interrogative form

Simple form	V-ing form
can I stool? can you stool? can he stool? can we stool? can you stool? can they stool?	can I be stooling? can you be stooling? can he be stooling? can we be stooling? can you be stooling? can they be stooling?
Perfect	V-ing perfect
can I have stooled? can you have stooled? can he have stooled? can we have stooled? can you have stooled? can they have stooled?	can I have been stooling? can you have been stooling? can he have been stooling? can we have been stooling? can you have been stooling? can they have been stooling?

Interro-negative form

Simple form	V-ing form
can't I stool? can't you stool? can't he stool? can't we stool? can't you stool? can't they stool?	can't I be stooling? can't you be stooling? can't he be stooling? can't we be stooling? can't you be stooling? can't they be stooling?
Perfect	V-ing perfect
can't I have stooled? can't you have stooled? can't he have stooled? can't we have stooled? can't you have stooled? can't they have stooled?	can't I have been stooling? can't you have been stooling? can't he have been stooling? can't we have been stooling? can't you have been stooling? can't they have been stooling?