English verb conjugation
CAN SKIRR

Regular verb: skirr - skirred - skirred

Affirmation

Simple form	V-ing form
I can skirr you can skirr he can skirr we can skirr you can skirr they can skirr	I can be skirring you can be skirring he can be skirring we can be skirring you can be skirring they can be skirring
Perfect	V-ing perfect
I can have skirred you can have skirred he can have skirred we can have skirred you can have skirred they can have skirred	I can have been skirring you can have been skirring he can have been skirring we can have been skirring you can have been skirring they can have been skirring

Negation

Simple form	V-ing form
I cannot skirr you cannot skirr he cannot skirr we cannot skirr you cannot skirr they cannot skirr	I cannot be skirring you cannot be skirring he cannot be skirring we cannot be skirring you cannot be skirring they cannot be skirring
Perfect	V-ing perfect
I cannot have skirred you cannot have skirred he cannot have skirred we cannot have skirred you cannot have skirred they cannot have skirred	I cannot have been skirring you cannot have been skirring he cannot have been skirring we cannot have been skirring you cannot have been skirring they cannot have been skirring

Interrogative form

Simple form	V-ing form
can I skirr? can you skirr? can he skirr? can we skirr? can you skirr? can they skirr?	can I be skirring? can you be skirring? can he be skirring? can we be skirring? can you be skirring? can they be skirring?
Perfect	V-ing perfect
can I have skirred? can you have skirred? can he have skirred? can we have skirred? can you have skirred? can they have skirred?	can I have been skirring? can you have been skirring? can he have been skirring? can we have been skirring? can you have been skirring? can they have been skirring?

Interro-negative form

Simple form	V-ing form
can I not skirr? can you not skirr? can he not skirr? can we not skirr? can you not skirr? can they not skirr?	can I not be skirring? can you not be skirring? can he not be skirring? can we not be skirring? can you not be skirring? can they not be skirring?
Perfect	V-ing perfect
can I not have skirred? can you not have skirred? can he not have skirred? can we not have skirred? can you not have skirred? can they not have skirred?	can I not have been skirring? can you not have been skirring? can he not have been skirring? can we not have been skirring? can you not have been skirring? can they not have been skirring?