English verb conjugation
CAN TWITCH

Regular verb: twitch - twitched - twitched

Affirmation

Simple form	V-ing form
I can twitch you can twitch he can twitch we can twitch you can twitch they can twitch	I can be twitching you can be twitching he can be twitching we can be twitching you can be twitching they can be twitching
Perfect	V-ing perfect
I can have twitched you can have twitched he can have twitched we can have twitched you can have twitched they can have twitched	I can have been twitching you can have been twitching he can have been twitching we can have been twitching you can have been twitching they can have been twitching

Negation

Simple form	V-ing form
I can't twitch you can't twitch he can't twitch we can't twitch you can't twitch they can't twitch	I can't be twitching you can't be twitching he can't be twitching we can't be twitching you can't be twitching they can't be twitching
Perfect	V-ing perfect
I can't have twitched you can't have twitched he can't have twitched we can't have twitched you can't have twitched they can't have twitched	I can't have been twitching you can't have been twitching he can't have been twitching we can't have been twitching you can't have been twitching they can't have been twitching

Interrogative form

Simple form	V-ing form
can I twitch? can you twitch? can he twitch? can we twitch? can you twitch? can they twitch?	can I be twitching? can you be twitching? can he be twitching? can we be twitching? can you be twitching? can they be twitching?
Perfect	V-ing perfect
can I have twitched? can you have twitched? can he have twitched? can we have twitched? can you have twitched? can they have twitched?	can I have been twitching? can you have been twitching? can he have been twitching? can we have been twitching? can you have been twitching? can they have been twitching?

Interro-negative form

Simple form	V-ing form
can't I twitch? can't you twitch? can't he twitch? can't we twitch? can't you twitch? can't they twitch?	can't I be twitching? can't you be twitching? can't he be twitching? can't we be twitching? can't you be twitching? can't they be twitching?
Perfect	V-ing perfect
can't I have twitched? can't you have twitched? can't he have twitched? can't we have twitched? can't you have twitched? can't they have twitched?	can't I have been twitching? can't you have been twitching? can't he have been twitching? can't we have been twitching? can't you have been twitching? can't they have been twitching?