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