could hill
Regular verb: hill - hilled- hilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hill
you could hill
he could hill
we could hill
you could hill
they could hill 	I could be hilling
you could be hilling
he could be hilling
we could be hilling
you could be hilling
they could be hilling	I could have hilled
you could have hilled
he could have hilled
we could have hilled
you could have hilled
they could have hilled	I could have been hilling
you could have been hilling
he could have been hilling
we could have been hilling
you could have been hilling
they could have been hilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't hill
you couldn't hill
he couldn't hill
we couldn't hill
you couldn't hill
they couldn't hill 	I couldn't be hilling
you couldn't be hilling
he couldn't be hilling
we couldn't be hilling
you couldn't be hilling
they couldn't be hilling	I couldn't have hilled
you couldn't have hilled
he couldn't have hilled
we couldn't have hilled
you couldn't have hilled
they couldn't have hilled	I couldn't have been hilling
you couldn't have been hilling
he couldn't have been hilling
we couldn't have been hilling
you couldn't have been hilling
they couldn't have been hilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hill?
could you hill?
could he hill?
could we hill?
could you hill?
could they hill? 	could I be hilling?
could you be hilling?
could he be hilling?
could we be hilling?
could you be hilling?
could they be hilling? 	could I have hilled?
could you have hilled?
could he have hilled?
could we have hilled?
could you have hilled?
could they have hilled? 	could I have been hilling?
could you have been hilling?
could he have been hilling?
could we have been hilling?
could you have been hilling?
could they have been hilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I hill?
couldn't you hill?
couldn't he hill?
couldn't we hill?
couldn't you hill?
couldn't they hill? 	couldn't I be hilling?
couldn't you be hilling?
couldn't he be hilling?
couldn't we be hilling?
couldn't you be hilling?
couldn't they be hilling? 	couldn't I have hilled?
couldn't you have hilled?
couldn't he have hilled?
couldn't we have hilled?
couldn't you have hilled?
couldn't they have hilled? 	couldn't I have been hilling?
couldn't you have been hilling?
couldn't he have been hilling?
couldn't we have been hilling?
couldn't you have been hilling?
couldn't they have been hilling?