could rehearse
Regular verb: rehearse - rehearsed- rehearsed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rehearse
you could rehearse
he could rehearse
we could rehearse
you could rehearse
they could rehearse 	I could be rehearsing
you could be rehearsing
he could be rehearsing
we could be rehearsing
you could be rehearsing
they could be rehearsing	I could have rehearsed
you could have rehearsed
he could have rehearsed
we could have rehearsed
you could have rehearsed
they could have rehearsed	I could have been rehearsing
you could have been rehearsing
he could have been rehearsing
we could have been rehearsing
you could have been rehearsing
they could have been rehearsing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rehearse
you couldn't rehearse
he couldn't rehearse
we couldn't rehearse
you couldn't rehearse
they couldn't rehearse 	I couldn't be rehearsing
you couldn't be rehearsing
he couldn't be rehearsing
we couldn't be rehearsing
you couldn't be rehearsing
they couldn't be rehearsing	I couldn't have rehearsed
you couldn't have rehearsed
he couldn't have rehearsed
we couldn't have rehearsed
you couldn't have rehearsed
they couldn't have rehearsed	I couldn't have been rehearsing
you couldn't have been rehearsing
he couldn't have been rehearsing
we couldn't have been rehearsing
you couldn't have been rehearsing
they couldn't have been rehearsing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rehearse?
could you rehearse?
could he rehearse?
could we rehearse?
could you rehearse?
could they rehearse? 	could I be rehearsing?
could you be rehearsing?
could he be rehearsing?
could we be rehearsing?
could you be rehearsing?
could they be rehearsing? 	could I have rehearsed?
could you have rehearsed?
could he have rehearsed?
could we have rehearsed?
could you have rehearsed?
could they have rehearsed? 	could I have been rehearsing?
could you have been rehearsing?
could he have been rehearsing?
could we have been rehearsing?
could you have been rehearsing?
could they have been rehearsing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rehearse?
couldn't you rehearse?
couldn't he rehearse?
couldn't we rehearse?
couldn't you rehearse?
couldn't they rehearse? 	couldn't I be rehearsing?
couldn't you be rehearsing?
couldn't he be rehearsing?
couldn't we be rehearsing?
couldn't you be rehearsing?
couldn't they be rehearsing? 	couldn't I have rehearsed?
couldn't you have rehearsed?
couldn't he have rehearsed?
couldn't we have rehearsed?
couldn't you have rehearsed?
couldn't they have rehearsed? 	couldn't I have been rehearsing?
couldn't you have been rehearsing?
couldn't he have been rehearsing?
couldn't we have been rehearsing?
couldn't you have been rehearsing?
couldn't they have been rehearsing?