English verb conjugation
CAN LETTER LETTER

Regular verb: letter letter - letter lettered - letter lettered

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I can letter letter you can letter letter he can letter letter we can letter letter you can letter letter they can letter letter	I can be letter lettering you can be letter lettering he can be letter lettering we can be letter lettering you can be letter lettering they can be letter lettering
Perfect	V-ing perfect
I can have letter lettered you can have letter lettered he can have letter lettered we can have letter lettered you can have letter lettered they can have letter lettered	I can have been letter lettering you can have been letter lettering he can have been letter lettering we can have been letter lettering you can have been letter lettering they can have been letter lettering

Negation

Simple form	V-ing form
I cannot letter letter you cannot letter letter he cannot letter letter we cannot letter letter you cannot letter letter they cannot letter letter	I cannot be letter lettering you cannot be letter lettering he cannot be letter lettering we cannot be letter lettering you cannot be letter lettering they cannot be letter lettering
Perfect	V-ing perfect
I cannot have letter lettered you cannot have letter lettered he cannot have letter lettered we cannot have letter lettered you cannot have letter lettered they cannot have letter lettered	I cannot have been letter lettering you cannot have been letter lettering he cannot have been letter lettering we cannot have been letter lettering you cannot have been letter lettering they cannot have been letter lettering

Interrogative form

Simple form	V-ing form
can I letter letter? can you letter letter? can he letter letter? can we letter letter? can you letter letter? can they letter letter?	can I be letter lettering? can you be letter lettering? can he be letter lettering? can we be letter lettering? can you be letter lettering? can they be letter lettering?
Perfect	V-ing perfect
can I have letter lettered? can you have letter lettered? can he have letter lettered? can we have letter lettered? can you have letter lettered? can they have letter lettered?	can I have been letter lettering? can you have been letter lettering? can he have been letter lettering? can we have been letter lettering? can you have been letter lettering? can they have been letter lettering?

Interro-negative form

Simple form	V-ing form
can I not letter letter? can you not letter letter? can he not letter letter? can we not letter letter? can you not letter letter? can they not letter letter?	can I not be letter lettering? can you not be letter lettering? can he not be letter lettering? can we not be letter lettering? can you not be letter lettering? can they not be letter lettering?
Perfect	V-ing perfect
can I not have letter lettered? can you not have letter lettered? can he not have letter lettered? can we not have letter lettered? can you not have letter lettered? can they not have letter lettered?	can I not have been letter lettering? can you not have been letter lettering? can he not have been letter lettering? can we not have been letter lettering? can you not have been letter lettering? can they not have been letter lettering?