English verb conjugation
COULD REHEARSE

Regular verb: rehearse - rehearsed - rehearsed

Affirmation

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