can vomit
Regular verb: vomit - vomited- vomited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can vomit
you can vomit
he can vomit
we can vomit
you can vomit
they can vomit 	I can be vomiting
you can be vomiting
he can be vomiting
we can be vomiting
you can be vomiting
they can be vomiting	I can have vomited
you can have vomited
he can have vomited
we can have vomited
you can have vomited
they can have vomited	I can have been vomiting
you can have been vomiting
he can have been vomiting
we can have been vomiting
you can have been vomiting
they can have been vomiting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't vomit
you can't vomit
he can't vomit
we can't vomit
you can't vomit
they can't vomit 	I can't be vomiting
you can't be vomiting
he can't be vomiting
we can't be vomiting
you can't be vomiting
they can't be vomiting	I can't have vomited
you can't have vomited
he can't have vomited
we can't have vomited
you can't have vomited
they can't have vomited	I can't have been vomiting
you can't have been vomiting
he can't have been vomiting
we can't have been vomiting
you can't have been vomiting
they can't have been vomiting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I vomit?
can you vomit?
can he vomit?
can we vomit?
can you vomit?
can they vomit? 	can I be vomiting?
can you be vomiting?
can he be vomiting?
can we be vomiting?
can you be vomiting?
can they be vomiting? 	can I have vomited?
can you have vomited?
can he have vomited?
can we have vomited?
can you have vomited?
can they have vomited? 	can I have been vomiting?
can you have been vomiting?
can he have been vomiting?
can we have been vomiting?
can you have been vomiting?
can they have been vomiting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I vomit?
can't you vomit?
can't he vomit?
can't we vomit?
can't you vomit?
can't they vomit? 	can't I be vomiting?
can't you be vomiting?
can't he be vomiting?
can't we be vomiting?
can't you be vomiting?
can't they be vomiting? 	can't I have vomited?
can't you have vomited?
can't he have vomited?
can't we have vomited?
can't you have vomited?
can't they have vomited? 	can't I have been vomiting?
can't you have been vomiting?
can't he have been vomiting?
can't we have been vomiting?
can't you have been vomiting?
can't they have been vomiting?