I could reverse you could reverse he could reverse we could reverse you could reverse they could reverse
V-ing form
I could be reversing you could be reversing he could be reversing we could be reversing you could be reversing they could be reversing
Perfect
I could have reversed you could have reversed he could have reversed we could have reversed you could have reversed they could have reversed
V-ing perfect
I could have been reversing you could have been reversing he could have been reversing we could have been reversing you could have been reversing they could have been reversing
Negation
Simple form
I couldn't reverse you couldn't reverse he couldn't reverse we couldn't reverse you couldn't reverse they couldn't reverse
V-ing form
I couldn't be reversing you couldn't be reversing he couldn't be reversing we couldn't be reversing you couldn't be reversing they couldn't be reversing
Perfect
I couldn't have reversed you couldn't have reversed he couldn't have reversed we couldn't have reversed you couldn't have reversed they couldn't have reversed
V-ing perfect
I couldn't have been reversing you couldn't have been reversing he couldn't have been reversing we couldn't have been reversing you couldn't have been reversing they couldn't have been reversing
Interrogative form
Simple form
could I reverse? could you reverse? could he reverse? could we reverse? could you reverse? could they reverse?
V-ing form
could I be reversing? could you be reversing? could he be reversing? could we be reversing? could you be reversing? could they be reversing?
Perfect
could I have reversed? could you have reversed? could he have reversed? could we have reversed? could you have reversed? could they have reversed?
V-ing perfect
could I have been reversing? could you have been reversing? could he have been reversing? could we have been reversing? could you have been reversing? could they have been reversing?
Interro-negative form
Simple form
couldn't I reverse? couldn't you reverse? couldn't he reverse? couldn't we reverse? couldn't you reverse? couldn't they reverse?
V-ing form
couldn't I be reversing? couldn't you be reversing? couldn't he be reversing? couldn't we be reversing? couldn't you be reversing? couldn't they be reversing?
Perfect
couldn't I have reversed? couldn't you have reversed? couldn't he have reversed? couldn't we have reversed? couldn't you have reversed? couldn't they have reversed?
V-ing perfect
couldn't I have been reversing? couldn't you have been reversing? couldn't he have been reversing? couldn't we have been reversing? couldn't you have been reversing? couldn't they have been reversing?