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