English verb conjugation
CAN TWITTER

Regular verb: twitter - twittered - twittered

Affirmation

Simple form	V-ing form
I can twitter you can twitter he can twitter we can twitter you can twitter they can twitter	I can be twittering you can be twittering he can be twittering we can be twittering you can be twittering they can be twittering
Perfect	V-ing perfect
I can have twittered you can have twittered he can have twittered we can have twittered you can have twittered they can have twittered	I can have been twittering you can have been twittering he can have been twittering we can have been twittering you can have been twittering they can have been twittering

Negation

Simple form	V-ing form
I cannot twitter you cannot twitter he cannot twitter we cannot twitter you cannot twitter they cannot twitter	I cannot be twittering you cannot be twittering he cannot be twittering we cannot be twittering you cannot be twittering they cannot be twittering
Perfect	V-ing perfect
I cannot have twittered you cannot have twittered he cannot have twittered we cannot have twittered you cannot have twittered they cannot have twittered	I cannot have been twittering you cannot have been twittering he cannot have been twittering we cannot have been twittering you cannot have been twittering they cannot have been twittering

Interrogative form

Simple form	V-ing form
can I twitter? can you twitter? can he twitter? can we twitter? can you twitter? can they twitter?	can I be twittering? can you be twittering? can he be twittering? can we be twittering? can you be twittering? can they be twittering?
Perfect	V-ing perfect
can I have twittered? can you have twittered? can he have twittered? can we have twittered? can you have twittered? can they have twittered?	can I have been twittering? can you have been twittering? can he have been twittering? can we have been twittering? can you have been twittering? can they have been twittering?

Interro-negative form

Simple form	V-ing form
can I not twitter? can you not twitter? can he not twitter? can we not twitter? can you not twitter? can they not twitter?	can I not be twittering? can you not be twittering? can he not be twittering? can we not be twittering? can you not be twittering? can they not be twittering?
Perfect	V-ing perfect
can I not have twittered? can you not have twittered? can he not have twittered? can we not have twittered? can you not have twittered? can they not have twittered?	can I not have been twittering? can you not have been twittering? can he not have been twittering? can we not have been twittering? can you not have been twittering? can they not have been twittering?