can retch
Regular verb: retch - retched- retched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can retch
you can retch
he can retch
we can retch
you can retch
they can retch 	I can be retching
you can be retching
he can be retching
we can be retching
you can be retching
they can be retching	I can have retched
you can have retched
he can have retched
we can have retched
you can have retched
they can have retched	I can have been retching
you can have been retching
he can have been retching
we can have been retching
you can have been retching
they can have been retching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't retch
you can't retch
he can't retch
we can't retch
you can't retch
they can't retch 	I can't be retching
you can't be retching
he can't be retching
we can't be retching
you can't be retching
they can't be retching	I can't have retched
you can't have retched
he can't have retched
we can't have retched
you can't have retched
they can't have retched	I can't have been retching
you can't have been retching
he can't have been retching
we can't have been retching
you can't have been retching
they can't have been retching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I retch?
can you retch?
can he retch?
can we retch?
can you retch?
can they retch? 	can I be retching?
can you be retching?
can he be retching?
can we be retching?
can you be retching?
can they be retching? 	can I have retched?
can you have retched?
can he have retched?
can we have retched?
can you have retched?
can they have retched? 	can I have been retching?
can you have been retching?
can he have been retching?
can we have been retching?
can you have been retching?
can they have been retching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I retch?
can't you retch?
can't he retch?
can't we retch?
can't you retch?
can't they retch? 	can't I be retching?
can't you be retching?
can't he be retching?
can't we be retching?
can't you be retching?
can't they be retching? 	can't I have retched?
can't you have retched?
can't he have retched?
can't we have retched?
can't you have retched?
can't they have retched? 	can't I have been retching?
can't you have been retching?
can't he have been retching?
can't we have been retching?
can't you have been retching?
can't they have been retching?