English verb conjugation
CAN STOOL

Regular verb: stool - stooled - stooled

Affirmation

Simple form	V-ing form
I can stool you can stool she can stool we can stool you can stool they can stool	I can be stooling you can be stooling she 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 she 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 she 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 cannot stool you cannot stool she cannot stool we cannot stool you cannot stool they cannot stool	I cannot be stooling you cannot be stooling she cannot be stooling we cannot be stooling you cannot be stooling they cannot be stooling
Perfect	V-ing perfect
I cannot have stooled you cannot have stooled she cannot have stooled we cannot have stooled you cannot have stooled they cannot have stooled	I cannot have been stooling you cannot have been stooling she cannot have been stooling we cannot have been stooling you cannot have been stooling they cannot have been stooling

Interrogative form

Simple form	V-ing form
can I stool? can you stool? can she stool? can we stool? can you stool? can they stool?	can I be stooling? can you be stooling? can she 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 she 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 she 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 I not stool? can you not stool? can she not stool? can we not stool? can you not stool? can they not stool?	can I not be stooling? can you not be stooling? can she not be stooling? can we not be stooling? can you not be stooling? can they not be stooling?
Perfect	V-ing perfect
can I not have stooled? can you not have stooled? can she not have stooled? can we not have stooled? can you not have stooled? can they not have stooled?	can I not have been stooling? can you not have been stooling? can she not have been stooling? can we not have been stooling? can you not have been stooling? can they not have been stooling?