I could rush you could rush she could rush we could rush you could rush they could rush
V-ing form
I could be rushing you could be rushing she could be rushing we could be rushing you could be rushing they could be rushing
Perfect
I could have rushed you could have rushed she could have rushed we could have rushed you could have rushed they could have rushed
V-ing perfect
I could have been rushing you could have been rushing she could have been rushing we could have been rushing you could have been rushing they could have been rushing
Negation
Simple form
I could not rush you could not rush she could not rush we could not rush you could not rush they could not rush
V-ing form
I could not be rushing you could not be rushing she could not be rushing we could not be rushing you could not be rushing they could not be rushing
Perfect
I could not have rushed you could not have rushed she could not have rushed we could not have rushed you could not have rushed they could not have rushed
V-ing perfect
I could not have been rushing you could not have been rushing she could not have been rushing we could not have been rushing you could not have been rushing they could not have been rushing
Interrogative form
Simple form
could I rush? could you rush? could she rush? could we rush? could you rush? could they rush?
V-ing form
could I be rushing? could you be rushing? could she be rushing? could we be rushing? could you be rushing? could they be rushing?
Perfect
could I have rushed? could you have rushed? could she have rushed? could we have rushed? could you have rushed? could they have rushed?
V-ing perfect
could I have been rushing? could you have been rushing? could she have been rushing? could we have been rushing? could you have been rushing? could they have been rushing?
Interro-negative form
Simple form
could I not rush? could you not rush? could she not rush? could we not rush? could you not rush? could they not rush?
V-ing form
could I not be rushing? could you not be rushing? could she not be rushing? could we not be rushing? could you not be rushing? could they not be rushing?
Perfect
could I not have rushed? could you not have rushed? could she not have rushed? could we not have rushed? could you not have rushed? could they not have rushed?
V-ing perfect
could I not have been rushing? could you not have been rushing? could she not have been rushing? could we not have been rushing? could you not have been rushing? could they not have been rushing?