could asphalt
Regular verb: asphalt - asphalted- asphalted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could asphalt
you could asphalt
he could asphalt
we could asphalt
you could asphalt
they could asphalt 	I could be asphalting
you could be asphalting
he could be asphalting
we could be asphalting
you could be asphalting
they could be asphalting	I could have asphalted
you could have asphalted
he could have asphalted
we could have asphalted
you could have asphalted
they could have asphalted	I could have been asphalting
you could have been asphalting
he could have been asphalting
we could have been asphalting
you could have been asphalting
they could have been asphalting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not asphalt
you could not asphalt
he could not asphalt
we could not asphalt
you could not asphalt
they could not asphalt 	I could not be asphalting
you could not be asphalting
he could not be asphalting
we could not be asphalting
you could not be asphalting
they could not be asphalting	I could not have asphalted
you could not have asphalted
he could not have asphalted
we could not have asphalted
you could not have asphalted
they could not have asphalted	I could not have been asphalting
you could not have been asphalting
he could not have been asphalting
we could not have been asphalting
you could not have been asphalting
they could not have been asphalting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I asphalt?
could you asphalt?
could he asphalt?
could we asphalt?
could you asphalt?
could they asphalt? 	could I be asphalting?
could you be asphalting?
could he be asphalting?
could we be asphalting?
could you be asphalting?
could they be asphalting? 	could I have asphalted?
could you have asphalted?
could he have asphalted?
could we have asphalted?
could you have asphalted?
could they have asphalted? 	could I have been asphalting?
could you have been asphalting?
could he have been asphalting?
could we have been asphalting?
could you have been asphalting?
could they have been asphalting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not asphalt?
could you not asphalt?
could he not asphalt?
could we not asphalt?
could you not asphalt?
could they not asphalt? 	could I not be asphalting?
could you not be asphalting?
could he not be asphalting?
could we not be asphalting?
could you not be asphalting?
could they not be asphalting? 	could I not have asphalted?
could you not have asphalted?
could he not have asphalted?
could we not have asphalted?
could you not have asphalted?
could they not have asphalted? 	could I not have been asphalting?
could you not have been asphalting?
could he not have been asphalting?
could we not have been asphalting?
could you not have been asphalting?
could they not have been asphalting?