can chap
Regular verb: chap - chapped- chapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can chap
you can chap
she can chap
we can chap
you can chap
they can chap 	I can be chapping
you can be chapping
she can be chapping
we can be chapping
you can be chapping
they can be chapping	I can have chapped
you can have chapped
she can have chapped
we can have chapped
you can have chapped
they can have chapped	I can have been chapping
you can have been chapping
she can have been chapping
we can have been chapping
you can have been chapping
they can have been chapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't chap
you can't chap
she can't chap
we can't chap
you can't chap
they can't chap 	I can't be chapping
you can't be chapping
she can't be chapping
we can't be chapping
you can't be chapping
they can't be chapping	I can't have chapped
you can't have chapped
she can't have chapped
we can't have chapped
you can't have chapped
they can't have chapped	I can't have been chapping
you can't have been chapping
she can't have been chapping
we can't have been chapping
you can't have been chapping
they can't have been chapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I chap?
can you chap?
can she chap?
can we chap?
can you chap?
can they chap? 	can I be chapping?
can you be chapping?
can she be chapping?
can we be chapping?
can you be chapping?
can they be chapping? 	can I have chapped?
can you have chapped?
can she have chapped?
can we have chapped?
can you have chapped?
can they have chapped? 	can I have been chapping?
can you have been chapping?
can she have been chapping?
can we have been chapping?
can you have been chapping?
can they have been chapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I chap?
can't you chap?
can't she chap?
can't we chap?
can't you chap?
can't they chap? 	can't I be chapping?
can't you be chapping?
can't she be chapping?
can't we be chapping?
can't you be chapping?
can't they be chapping? 	can't I have chapped?
can't you have chapped?
can't she have chapped?
can't we have chapped?
can't you have chapped?
can't they have chapped? 	can't I have been chapping?
can't you have been chapping?
can't she have been chapping?
can't we have been chapping?
can't you have been chapping?
can't they have been chapping?