could shank
Regular verb: shank - shanked- shanked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could shank
you could shank
she could shank
we could shank
you could shank
they could shank 	I could be shanking
you could be shanking
she could be shanking
we could be shanking
you could be shanking
they could be shanking	I could have shanked
you could have shanked
she could have shanked
we could have shanked
you could have shanked
they could have shanked	I could have been shanking
you could have been shanking
she could have been shanking
we could have been shanking
you could have been shanking
they could have been shanking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't shank
you couldn't shank
she couldn't shank
we couldn't shank
you couldn't shank
they couldn't shank 	I couldn't be shanking
you couldn't be shanking
she couldn't be shanking
we couldn't be shanking
you couldn't be shanking
they couldn't be shanking	I couldn't have shanked
you couldn't have shanked
she couldn't have shanked
we couldn't have shanked
you couldn't have shanked
they couldn't have shanked	I couldn't have been shanking
you couldn't have been shanking
she couldn't have been shanking
we couldn't have been shanking
you couldn't have been shanking
they couldn't have been shanking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I shank?
could you shank?
could she shank?
could we shank?
could you shank?
could they shank? 	could I be shanking?
could you be shanking?
could she be shanking?
could we be shanking?
could you be shanking?
could they be shanking? 	could I have shanked?
could you have shanked?
could she have shanked?
could we have shanked?
could you have shanked?
could they have shanked? 	could I have been shanking?
could you have been shanking?
could she have been shanking?
could we have been shanking?
could you have been shanking?
could they have been shanking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I shank?
couldn't you shank?
couldn't she shank?
couldn't we shank?
couldn't you shank?
couldn't they shank? 	couldn't I be shanking?
couldn't you be shanking?
couldn't she be shanking?
couldn't we be shanking?
couldn't you be shanking?
couldn't they be shanking? 	couldn't I have shanked?
couldn't you have shanked?
couldn't she have shanked?
couldn't we have shanked?
couldn't you have shanked?
couldn't they have shanked? 	couldn't I have been shanking?
couldn't you have been shanking?
couldn't she have been shanking?
couldn't we have been shanking?
couldn't you have been shanking?
couldn't they have been shanking?