can hamper
Regular verb: hamper - hampered- hampered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can hamper
you can hamper
she can hamper
we can hamper
you can hamper
they can hamper 	I can be hampering
you can be hampering
she can be hampering
we can be hampering
you can be hampering
they can be hampering	I can have hampered
you can have hampered
she can have hampered
we can have hampered
you can have hampered
they can have hampered	I can have been hampering
you can have been hampering
she can have been hampering
we can have been hampering
you can have been hampering
they can have been hampering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't hamper
you can't hamper
she can't hamper
we can't hamper
you can't hamper
they can't hamper 	I can't be hampering
you can't be hampering
she can't be hampering
we can't be hampering
you can't be hampering
they can't be hampering	I can't have hampered
you can't have hampered
she can't have hampered
we can't have hampered
you can't have hampered
they can't have hampered	I can't have been hampering
you can't have been hampering
she can't have been hampering
we can't have been hampering
you can't have been hampering
they can't have been hampering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I hamper?
can you hamper?
can she hamper?
can we hamper?
can you hamper?
can they hamper? 	can I be hampering?
can you be hampering?
can she be hampering?
can we be hampering?
can you be hampering?
can they be hampering? 	can I have hampered?
can you have hampered?
can she have hampered?
can we have hampered?
can you have hampered?
can they have hampered? 	can I have been hampering?
can you have been hampering?
can she have been hampering?
can we have been hampering?
can you have been hampering?
can they have been hampering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I hamper?
can't you hamper?
can't she hamper?
can't we hamper?
can't you hamper?
can't they hamper? 	can't I be hampering?
can't you be hampering?
can't she be hampering?
can't we be hampering?
can't you be hampering?
can't they be hampering? 	can't I have hampered?
can't you have hampered?
can't she have hampered?
can't we have hampered?
can't you have hampered?
can't they have hampered? 	can't I have been hampering?
can't you have been hampering?
can't she have been hampering?
can't we have been hampering?
can't you have been hampering?
can't they have been hampering?