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