English verb conjugation
CAN CHIRR

Regular verb: chirr - chirred - chirred

Affirmation

Simple form	V-ing form
I can chirr you can chirr he can chirr we can chirr you can chirr they can chirr	I can be chirring you can be chirring he can be chirring we can be chirring you can be chirring they can be chirring
Perfect	V-ing perfect
I can have chirred you can have chirred he can have chirred we can have chirred you can have chirred they can have chirred	I can have been chirring you can have been chirring he can have been chirring we can have been chirring you can have been chirring they can have been chirring

Negation

Simple form	V-ing form
I can't chirr you can't chirr he can't chirr we can't chirr you can't chirr they can't chirr	I can't be chirring you can't be chirring he can't be chirring we can't be chirring you can't be chirring they can't be chirring
Perfect	V-ing perfect
I can't have chirred you can't have chirred he can't have chirred we can't have chirred you can't have chirred they can't have chirred	I can't have been chirring you can't have been chirring he can't have been chirring we can't have been chirring you can't have been chirring they can't have been chirring

Interrogative form

Simple form	V-ing form
can I chirr? can you chirr? can he chirr? can we chirr? can you chirr? can they chirr?	can I be chirring? can you be chirring? can he be chirring? can we be chirring? can you be chirring? can they be chirring?
Perfect	V-ing perfect
can I have chirred? can you have chirred? can he have chirred? can we have chirred? can you have chirred? can they have chirred?	can I have been chirring? can you have been chirring? can he have been chirring? can we have been chirring? can you have been chirring? can they have been chirring?

Interro-negative form

Simple form	V-ing form
can't I chirr? can't you chirr? can't he chirr? can't we chirr? can't you chirr? can't they chirr?	can't I be chirring? can't you be chirring? can't he be chirring? can't we be chirring? can't you be chirring? can't they be chirring?
Perfect	V-ing perfect
can't I have chirred? can't you have chirred? can't he have chirred? can't we have chirred? can't you have chirred? can't they have chirred?	can't I have been chirring? can't you have been chirring? can't he have been chirring? can't we have been chirring? can't you have been chirring? can't they have been chirring?