could triumph
Regular verb: triumph - triumphed- triumphed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could triumph
you could triumph
he could triumph
we could triumph
you could triumph
they could triumph 	I could be triumphing
you could be triumphing
he could be triumphing
we could be triumphing
you could be triumphing
they could be triumphing	I could have triumphed
you could have triumphed
he could have triumphed
we could have triumphed
you could have triumphed
they could have triumphed	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 	V-ing form 	Perfect 	V-ing perfect 	
I could not triumph
you could not triumph
he could not triumph
we could not triumph
you could not triumph
they could not triumph 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
could I triumph?
could you triumph?
could he triumph?
could we triumph?
could you triumph?
could they triumph? 	could I be triumphing?
could you be triumphing?
could he be triumphing?
could we be triumphing?
could you be triumphing?
could they be triumphing? 	could I have triumphed?
could you have triumphed?
could he have triumphed?
could we have triumphed?
could you have triumphed?
could they have triumphed? 	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 	V-ing form 	Perfect 	V-ing perfect 	
could I not triumph?
could you not triumph?
could he not triumph?
could we not triumph?
could you not triumph?
could they not triumph? 	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? 	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? 	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?