English verb conjugation
COULD REHEARSE

Regular verb: rehearse - rehearsed - rehearsed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I could not rehearse you could not rehearse he could not rehearse we could not rehearse you could not rehearse they could not rehearse	I could not be rehearsing you could not be rehearsing he could not be rehearsing we could not be rehearsing you could not be rehearsing they could not be rehearsing
Perfect	V-ing perfect
I could not have rehearsed you could not have rehearsed he could not have rehearsed we could not have rehearsed you could not have rehearsed they could not have rehearsed	I could not have been rehearsing you could not have been rehearsing he could not have been rehearsing we could not have been rehearsing you could not have been rehearsing they could not have been rehearsing

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
could I not rehearse? could you not rehearse? could he not rehearse? could we not rehearse? could you not rehearse? could they not rehearse?	could I not be rehearsing? could you not be rehearsing? could he not be rehearsing? could we not be rehearsing? could you not be rehearsing? could they not be rehearsing?
Perfect	V-ing perfect
could I not have rehearsed? could you not have rehearsed? could he not have rehearsed? could we not have rehearsed? could you not have rehearsed? could they not have rehearsed?	could I not have been rehearsing? could you not have been rehearsing? could he not have been rehearsing? could we not have been rehearsing? could you not have been rehearsing? could they not have been rehearsing?