could resurface
Regular verb: resurface - resurfaced- resurfaced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could resurface
you could resurface
he could resurface
we could resurface
you could resurface
they could resurface 	I could be resurfacing
you could be resurfacing
he could be resurfacing
we could be resurfacing
you could be resurfacing
they could be resurfacing	I could have resurfaced
you could have resurfaced
he could have resurfaced
we could have resurfaced
you could have resurfaced
they could have resurfaced	I could have been resurfacing
you could have been resurfacing
he could have been resurfacing
we could have been resurfacing
you could have been resurfacing
they could have been resurfacing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not resurface
you could not resurface
he could not resurface
we could not resurface
you could not resurface
they could not resurface 	I could not be resurfacing
you could not be resurfacing
he could not be resurfacing
we could not be resurfacing
you could not be resurfacing
they could not be resurfacing	I could not have resurfaced
you could not have resurfaced
he could not have resurfaced
we could not have resurfaced
you could not have resurfaced
they could not have resurfaced	I could not have been resurfacing
you could not have been resurfacing
he could not have been resurfacing
we could not have been resurfacing
you could not have been resurfacing
they could not have been resurfacing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I resurface?
could you resurface?
could he resurface?
could we resurface?
could you resurface?
could they resurface? 	could I be resurfacing?
could you be resurfacing?
could he be resurfacing?
could we be resurfacing?
could you be resurfacing?
could they be resurfacing? 	could I have resurfaced?
could you have resurfaced?
could he have resurfaced?
could we have resurfaced?
could you have resurfaced?
could they have resurfaced? 	could I have been resurfacing?
could you have been resurfacing?
could he have been resurfacing?
could we have been resurfacing?
could you have been resurfacing?
could they have been resurfacing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not resurface?
could you not resurface?
could he not resurface?
could we not resurface?
could you not resurface?
could they not resurface? 	could I not be resurfacing?
could you not be resurfacing?
could he not be resurfacing?
could we not be resurfacing?
could you not be resurfacing?
could they not be resurfacing? 	could I not have resurfaced?
could you not have resurfaced?
could he not have resurfaced?
could we not have resurfaced?
could you not have resurfaced?
could they not have resurfaced? 	could I not have been resurfacing?
could you not have been resurfacing?
could he not have been resurfacing?
could we not have been resurfacing?
could you not have been resurfacing?
could they not have been resurfacing?