can surface
Regular verb: surface - surfaced- surfaced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can surface
you can surface
he can surface
we can surface
you can surface
they can surface 	I can be surfacing
you can be surfacing
he can be surfacing
we can be surfacing
you can be surfacing
they can be surfacing	I can have surfaced
you can have surfaced
he can have surfaced
we can have surfaced
you can have surfaced
they can have surfaced	I can have been surfacing
you can have been surfacing
he can have been surfacing
we can have been surfacing
you can have been surfacing
they can have been surfacing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't surface
you can't surface
he can't surface
we can't surface
you can't surface
they can't surface 	I can't be surfacing
you can't be surfacing
he can't be surfacing
we can't be surfacing
you can't be surfacing
they can't be surfacing	I can't have surfaced
you can't have surfaced
he can't have surfaced
we can't have surfaced
you can't have surfaced
they can't have surfaced	I can't have been surfacing
you can't have been surfacing
he can't have been surfacing
we can't have been surfacing
you can't have been surfacing
they can't have been surfacing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I surface?
can you surface?
can he surface?
can we surface?
can you surface?
can they surface? 	can I be surfacing?
can you be surfacing?
can he be surfacing?
can we be surfacing?
can you be surfacing?
can they be surfacing? 	can I have surfaced?
can you have surfaced?
can he have surfaced?
can we have surfaced?
can you have surfaced?
can they have surfaced? 	can I have been surfacing?
can you have been surfacing?
can he have been surfacing?
can we have been surfacing?
can you have been surfacing?
can they have been surfacing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I surface?
can't you surface?
can't he surface?
can't we surface?
can't you surface?
can't they surface? 	can't I be surfacing?
can't you be surfacing?
can't he be surfacing?
can't we be surfacing?
can't you be surfacing?
can't they be surfacing? 	can't I have surfaced?
can't you have surfaced?
can't he have surfaced?
can't we have surfaced?
can't you have surfaced?
can't they have surfaced? 	can't I have been surfacing?
can't you have been surfacing?
can't he have been surfacing?
can't we have been surfacing?
can't you have been surfacing?
can't they have been surfacing?