I could triumph you could triumph he could triumph we could triumph you could triumph they could triumph
V-ing form
I could be triumphing you could be triumphing he could be triumphing we could be triumphing you could be triumphing they could be triumphing
Perfect
I could have triumphed you could have triumphed he could have triumphed we could have triumphed you could have triumphed they could have triumphed
V-ing perfect
I could have been triumphing you could have been triumphing he could have been triumphing we could have been triumphing you could have been triumphing they could have been triumphing
Negation
Simple form
I could not triumph you could not triumph he could not triumph we could not triumph you could not triumph they could not triumph
V-ing form
I could not be triumphing you could not be triumphing he could not be triumphing we could not be triumphing you could not be triumphing they could not be triumphing
Perfect
I could not have triumphed you could not have triumphed he could not have triumphed we could not have triumphed you could not have triumphed they could not have triumphed
V-ing perfect
I could not have been triumphing you could not have been triumphing he could not have been triumphing we could not have been triumphing you could not have been triumphing they could not have been triumphing
Interrogative form
Simple form
could I triumph? could you triumph? could he triumph? could we triumph? could you triumph? could they triumph?
V-ing form
could I be triumphing? could you be triumphing? could he be triumphing? could we be triumphing? could you be triumphing? could they be triumphing?
Perfect
could I have triumphed? could you have triumphed? could he have triumphed? could we have triumphed? could you have triumphed? could they have triumphed?
V-ing perfect
could I have been triumphing? could you have been triumphing? could he have been triumphing? could we have been triumphing? could you have been triumphing? could they have been triumphing?
Interro-negative form
Simple form
could I not triumph? could you not triumph? could he not triumph? could we not triumph? could you not triumph? could they not triumph?
V-ing form
could I not be triumphing? could you not be triumphing? could he not be triumphing? could we not be triumphing? could you not be triumphing? could they not be triumphing?
Perfect
could I not have triumphed? could you not have triumphed? could he not have triumphed? could we not have triumphed? could you not have triumphed? could they not have triumphed?
V-ing perfect
could I not have been triumphing? could you not have been triumphing? could he not have been triumphing? could we not have been triumphing? could you not have been triumphing? could they not have been triumphing?