could trounce
Regular verb: trounce - trounced- trounced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could trounce
you could trounce
he could trounce
we could trounce
you could trounce
they could trounce 	I could be trouncing
you could be trouncing
he could be trouncing
we could be trouncing
you could be trouncing
they could be trouncing	I could have trounced
you could have trounced
he could have trounced
we could have trounced
you could have trounced
they could have trounced	I could have been trouncing
you could have been trouncing
he could have been trouncing
we could have been trouncing
you could have been trouncing
they could have been trouncing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't trounce
you couldn't trounce
he couldn't trounce
we couldn't trounce
you couldn't trounce
they couldn't trounce 	I couldn't be trouncing
you couldn't be trouncing
he couldn't be trouncing
we couldn't be trouncing
you couldn't be trouncing
they couldn't be trouncing	I couldn't have trounced
you couldn't have trounced
he couldn't have trounced
we couldn't have trounced
you couldn't have trounced
they couldn't have trounced	I couldn't have been trouncing
you couldn't have been trouncing
he couldn't have been trouncing
we couldn't have been trouncing
you couldn't have been trouncing
they couldn't have been trouncing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I trounce?
could you trounce?
could he trounce?
could we trounce?
could you trounce?
could they trounce? 	could I be trouncing?
could you be trouncing?
could he be trouncing?
could we be trouncing?
could you be trouncing?
could they be trouncing? 	could I have trounced?
could you have trounced?
could he have trounced?
could we have trounced?
could you have trounced?
could they have trounced? 	could I have been trouncing?
could you have been trouncing?
could he have been trouncing?
could we have been trouncing?
could you have been trouncing?
could they have been trouncing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I trounce?
couldn't you trounce?
couldn't he trounce?
couldn't we trounce?
couldn't you trounce?
couldn't they trounce? 	couldn't I be trouncing?
couldn't you be trouncing?
couldn't he be trouncing?
couldn't we be trouncing?
couldn't you be trouncing?
couldn't they be trouncing? 	couldn't I have trounced?
couldn't you have trounced?
couldn't he have trounced?
couldn't we have trounced?
couldn't you have trounced?
couldn't they have trounced? 	couldn't I have been trouncing?
couldn't you have been trouncing?
couldn't he have been trouncing?
couldn't we have been trouncing?
couldn't you have been trouncing?
couldn't they have been trouncing?