English verb conjugation
CAN STIR

Regular verb: stir - stirred - stirred

Affirmation

Simple form	V-ing form
I can stir you can stir she can stir we can stir you can stir they can stir	I can be stirring you can be stirring she can be stirring we can be stirring you can be stirring they can be stirring
Perfect	V-ing perfect
I can have stirred you can have stirred she can have stirred we can have stirred you can have stirred they can have stirred	I can have been stirring you can have been stirring she can have been stirring we can have been stirring you can have been stirring they can have been stirring

Negation

Simple form	V-ing form
I cannot stir you cannot stir she cannot stir we cannot stir you cannot stir they cannot stir	I cannot be stirring you cannot be stirring she cannot be stirring we cannot be stirring you cannot be stirring they cannot be stirring
Perfect	V-ing perfect
I cannot have stirred you cannot have stirred she cannot have stirred we cannot have stirred you cannot have stirred they cannot have stirred	I cannot have been stirring you cannot have been stirring she cannot have been stirring we cannot have been stirring you cannot have been stirring they cannot have been stirring

Interrogative form

Simple form	V-ing form
can I stir? can you stir? can she stir? can we stir? can you stir? can they stir?	can I be stirring? can you be stirring? can she be stirring? can we be stirring? can you be stirring? can they be stirring?
Perfect	V-ing perfect
can I have stirred? can you have stirred? can she have stirred? can we have stirred? can you have stirred? can they have stirred?	can I have been stirring? can you have been stirring? can she have been stirring? can we have been stirring? can you have been stirring? can they have been stirring?

Interro-negative form

Simple form	V-ing form
can I not stir? can you not stir? can she not stir? can we not stir? can you not stir? can they not stir?	can I not be stirring? can you not be stirring? can she not be stirring? can we not be stirring? can you not be stirring? can they not be stirring?
Perfect	V-ing perfect
can I not have stirred? can you not have stirred? can she not have stirred? can we not have stirred? can you not have stirred? can they not have stirred?	can I not have been stirring? can you not have been stirring? can she not have been stirring? can we not have been stirring? can you not have been stirring? can they not have been stirring?