could outbox
Verbo regular: outbox - outboxed- outboxed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could outbox
you could outbox
he could outbox
we could outbox
you could outbox
they could outbox 	I could be outboxing
you could be outboxing
he could be outboxing
we could be outboxing
you could be outboxing
they could be outboxing	I could have outboxed
you could have outboxed
he could have outboxed
we could have outboxed
you could have outboxed
they could have outboxed	I could have been outboxing
you could have been outboxing
he could have been outboxing
we could have been outboxing
you could have been outboxing
they could have been outboxing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't outbox
you couldn't outbox
he couldn't outbox
we couldn't outbox
you couldn't outbox
they couldn't outbox 	I couldn't be outboxing
you couldn't be outboxing
he couldn't be outboxing
we couldn't be outboxing
you couldn't be outboxing
they couldn't be outboxing	I couldn't have outboxed
you couldn't have outboxed
he couldn't have outboxed
we couldn't have outboxed
you couldn't have outboxed
they couldn't have outboxed	I couldn't have been outboxing
you couldn't have been outboxing
he couldn't have been outboxing
we couldn't have been outboxing
you couldn't have been outboxing
they couldn't have been outboxing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I outbox?
could you outbox?
could he outbox?
could we outbox?
could you outbox?
could they outbox? 	could I be outboxing?
could you be outboxing?
could he be outboxing?
could we be outboxing?
could you be outboxing?
could they be outboxing? 	could I have outboxed?
could you have outboxed?
could he have outboxed?
could we have outboxed?
could you have outboxed?
could they have outboxed? 	could I have been outboxing?
could you have been outboxing?
could he have been outboxing?
could we have been outboxing?
could you have been outboxing?
could they have been outboxing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I outbox?
couldn't you outbox?
couldn't he outbox?
couldn't we outbox?
couldn't you outbox?
couldn't they outbox? 	couldn't I be outboxing?
couldn't you be outboxing?
couldn't he be outboxing?
couldn't we be outboxing?
couldn't you be outboxing?
couldn't they be outboxing? 	couldn't I have outboxed?
couldn't you have outboxed?
couldn't he have outboxed?
couldn't we have outboxed?
couldn't you have outboxed?
couldn't they have outboxed? 	couldn't I have been outboxing?
couldn't you have been outboxing?
couldn't he have been outboxing?
couldn't we have been outboxing?
couldn't you have been outboxing?
couldn't they have been outboxing?