could blip
Regular verb: blip - bliped- bliped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could blip
you could blip
he could blip
we could blip
you could blip
they could blip 	I could be bliping
you could be bliping
he could be bliping
we could be bliping
you could be bliping
they could be bliping	I could have bliped
you could have bliped
he could have bliped
we could have bliped
you could have bliped
they could have bliped	I could have been bliping
you could have been bliping
he could have been bliping
we could have been bliping
you could have been bliping
they could have been bliping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not blip
you could not blip
he could not blip
we could not blip
you could not blip
they could not blip 	I could not be bliping
you could not be bliping
he could not be bliping
we could not be bliping
you could not be bliping
they could not be bliping	I could not have bliped
you could not have bliped
he could not have bliped
we could not have bliped
you could not have bliped
they could not have bliped	I could not have been bliping
you could not have been bliping
he could not have been bliping
we could not have been bliping
you could not have been bliping
they could not have been bliping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I blip?
could you blip?
could he blip?
could we blip?
could you blip?
could they blip? 	could I be bliping?
could you be bliping?
could he be bliping?
could we be bliping?
could you be bliping?
could they be bliping? 	could I have bliped?
could you have bliped?
could he have bliped?
could we have bliped?
could you have bliped?
could they have bliped? 	could I have been bliping?
could you have been bliping?
could he have been bliping?
could we have been bliping?
could you have been bliping?
could they have been bliping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not blip?
could you not blip?
could he not blip?
could we not blip?
could you not blip?
could they not blip? 	could I not be bliping?
could you not be bliping?
could he not be bliping?
could we not be bliping?
could you not be bliping?
could they not be bliping? 	could I not have bliped?
could you not have bliped?
could he not have bliped?
could we not have bliped?
could you not have bliped?
could they not have bliped? 	could I not have been bliping?
could you not have been bliping?
could he not have been bliping?
could we not have been bliping?
could you not have been bliping?
could they not have been bliping?