can twitch
Regular verb: twitch - twitched- twitched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?