could pop
Verbo regular: pop - popped- popped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could pop
you could pop
she could pop
we could pop
you could pop
they could pop 	I could be popping
you could be popping
she could be popping
we could be popping
you could be popping
they could be popping	I could have popped
you could have popped
she could have popped
we could have popped
you could have popped
they could have popped	I could have been popping
you could have been popping
she could have been popping
we could have been popping
you could have been popping
they could have been popping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't pop
you couldn't pop
she couldn't pop
we couldn't pop
you couldn't pop
they couldn't pop 	I couldn't be popping
you couldn't be popping
she couldn't be popping
we couldn't be popping
you couldn't be popping
they couldn't be popping	I couldn't have popped
you couldn't have popped
she couldn't have popped
we couldn't have popped
you couldn't have popped
they couldn't have popped	I couldn't have been popping
you couldn't have been popping
she couldn't have been popping
we couldn't have been popping
you couldn't have been popping
they couldn't have been popping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I pop?
could you pop?
could she pop?
could we pop?
could you pop?
could they pop? 	could I be popping?
could you be popping?
could she be popping?
could we be popping?
could you be popping?
could they be popping? 	could I have popped?
could you have popped?
could she have popped?
could we have popped?
could you have popped?
could they have popped? 	could I have been popping?
could you have been popping?
could she have been popping?
could we have been popping?
could you have been popping?
could they have been popping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I pop?
couldn't you pop?
couldn't she pop?
couldn't we pop?
couldn't you pop?
couldn't they pop? 	couldn't I be popping?
couldn't you be popping?
couldn't she be popping?
couldn't we be popping?
couldn't you be popping?
couldn't they be popping? 	couldn't I have popped?
couldn't you have popped?
couldn't she have popped?
couldn't we have popped?
couldn't you have popped?
couldn't they have popped? 	couldn't I have been popping?
couldn't you have been popping?
couldn't she have been popping?
couldn't we have been popping?
couldn't you have been popping?
couldn't they have been popping?