could scalp
Regular verb: scalp - scalped- scalped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could scalp
you could scalp
he could scalp
we could scalp
you could scalp
they could scalp 	I could be scalping
you could be scalping
he could be scalping
we could be scalping
you could be scalping
they could be scalping	I could have scalped
you could have scalped
he could have scalped
we could have scalped
you could have scalped
they could have scalped	I could have been scalping
you could have been scalping
he could have been scalping
we could have been scalping
you could have been scalping
they could have been scalping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't scalp
you couldn't scalp
he couldn't scalp
we couldn't scalp
you couldn't scalp
they couldn't scalp 	I couldn't be scalping
you couldn't be scalping
he couldn't be scalping
we couldn't be scalping
you couldn't be scalping
they couldn't be scalping	I couldn't have scalped
you couldn't have scalped
he couldn't have scalped
we couldn't have scalped
you couldn't have scalped
they couldn't have scalped	I couldn't have been scalping
you couldn't have been scalping
he couldn't have been scalping
we couldn't have been scalping
you couldn't have been scalping
they couldn't have been scalping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I scalp?
could you scalp?
could he scalp?
could we scalp?
could you scalp?
could they scalp? 	could I be scalping?
could you be scalping?
could he be scalping?
could we be scalping?
could you be scalping?
could they be scalping? 	could I have scalped?
could you have scalped?
could he have scalped?
could we have scalped?
could you have scalped?
could they have scalped? 	could I have been scalping?
could you have been scalping?
could he have been scalping?
could we have been scalping?
could you have been scalping?
could they have been scalping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I scalp?
couldn't you scalp?
couldn't he scalp?
couldn't we scalp?
couldn't you scalp?
couldn't they scalp? 	couldn't I be scalping?
couldn't you be scalping?
couldn't he be scalping?
couldn't we be scalping?
couldn't you be scalping?
couldn't they be scalping? 	couldn't I have scalped?
couldn't you have scalped?
couldn't he have scalped?
couldn't we have scalped?
couldn't you have scalped?
couldn't they have scalped? 	couldn't I have been scalping?
couldn't you have been scalping?
couldn't he have been scalping?
couldn't we have been scalping?
couldn't you have been scalping?
couldn't they have been scalping?