could rehash
Regular verb: rehash - rehashed- rehashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rehash
you could rehash
she could rehash
we could rehash
you could rehash
they could rehash 	I could be rehashing
you could be rehashing
she could be rehashing
we could be rehashing
you could be rehashing
they could be rehashing	I could have rehashed
you could have rehashed
she could have rehashed
we could have rehashed
you could have rehashed
they could have rehashed	I could have been rehashing
you could have been rehashing
she could have been rehashing
we could have been rehashing
you could have been rehashing
they could have been rehashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rehash
you couldn't rehash
she couldn't rehash
we couldn't rehash
you couldn't rehash
they couldn't rehash 	I couldn't be rehashing
you couldn't be rehashing
she couldn't be rehashing
we couldn't be rehashing
you couldn't be rehashing
they couldn't be rehashing	I couldn't have rehashed
you couldn't have rehashed
she couldn't have rehashed
we couldn't have rehashed
you couldn't have rehashed
they couldn't have rehashed	I couldn't have been rehashing
you couldn't have been rehashing
she couldn't have been rehashing
we couldn't have been rehashing
you couldn't have been rehashing
they couldn't have been rehashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rehash?
could you rehash?
could she rehash?
could we rehash?
could you rehash?
could they rehash? 	could I be rehashing?
could you be rehashing?
could she be rehashing?
could we be rehashing?
could you be rehashing?
could they be rehashing? 	could I have rehashed?
could you have rehashed?
could she have rehashed?
could we have rehashed?
could you have rehashed?
could they have rehashed? 	could I have been rehashing?
could you have been rehashing?
could she have been rehashing?
could we have been rehashing?
could you have been rehashing?
could they have been rehashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rehash?
couldn't you rehash?
couldn't she rehash?
couldn't we rehash?
couldn't you rehash?
couldn't they rehash? 	couldn't I be rehashing?
couldn't you be rehashing?
couldn't she be rehashing?
couldn't we be rehashing?
couldn't you be rehashing?
couldn't they be rehashing? 	couldn't I have rehashed?
couldn't you have rehashed?
couldn't she have rehashed?
couldn't we have rehashed?
couldn't you have rehashed?
couldn't they have rehashed? 	couldn't I have been rehashing?
couldn't you have been rehashing?
couldn't she have been rehashing?
couldn't we have been rehashing?
couldn't you have been rehashing?
couldn't they have been rehashing?