could twill
Regular verb: twill - twilled- twilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could twill
you could twill
she could twill
we could twill
you could twill
they could twill 	I could be twilling
you could be twilling
she could be twilling
we could be twilling
you could be twilling
they could be twilling	I could have twilled
you could have twilled
she could have twilled
we could have twilled
you could have twilled
they could have twilled	I could have been twilling
you could have been twilling
she could have been twilling
we could have been twilling
you could have been twilling
they could have been twilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not twill
you could not twill
she could not twill
we could not twill
you could not twill
they could not twill 	I could not be twilling
you could not be twilling
she could not be twilling
we could not be twilling
you could not be twilling
they could not be twilling	I could not have twilled
you could not have twilled
she could not have twilled
we could not have twilled
you could not have twilled
they could not have twilled	I could not have been twilling
you could not have been twilling
she could not have been twilling
we could not have been twilling
you could not have been twilling
they could not have been twilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I twill?
could you twill?
could she twill?
could we twill?
could you twill?
could they twill? 	could I be twilling?
could you be twilling?
could she be twilling?
could we be twilling?
could you be twilling?
could they be twilling? 	could I have twilled?
could you have twilled?
could she have twilled?
could we have twilled?
could you have twilled?
could they have twilled? 	could I have been twilling?
could you have been twilling?
could she have been twilling?
could we have been twilling?
could you have been twilling?
could they have been twilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not twill?
could you not twill?
could she not twill?
could we not twill?
could you not twill?
could they not twill? 	could I not be twilling?
could you not be twilling?
could she not be twilling?
could we not be twilling?
could you not be twilling?
could they not be twilling? 	could I not have twilled?
could you not have twilled?
could she not have twilled?
could we not have twilled?
could you not have twilled?
could they not have twilled? 	could I not have been twilling?
could you not have been twilling?
could she not have been twilling?
could we not have been twilling?
could you not have been twilling?
could they not have been twilling?