could kink
Regular verb: kink - kinked- kinked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could kink
you could kink
she could kink
we could kink
you could kink
they could kink 	I could be kinking
you could be kinking
she could be kinking
we could be kinking
you could be kinking
they could be kinking	I could have kinked
you could have kinked
she could have kinked
we could have kinked
you could have kinked
they could have kinked	I could have been kinking
you could have been kinking
she could have been kinking
we could have been kinking
you could have been kinking
they could have been kinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't kink
you couldn't kink
she couldn't kink
we couldn't kink
you couldn't kink
they couldn't kink 	I couldn't be kinking
you couldn't be kinking
she couldn't be kinking
we couldn't be kinking
you couldn't be kinking
they couldn't be kinking	I couldn't have kinked
you couldn't have kinked
she couldn't have kinked
we couldn't have kinked
you couldn't have kinked
they couldn't have kinked	I couldn't have been kinking
you couldn't have been kinking
she couldn't have been kinking
we couldn't have been kinking
you couldn't have been kinking
they couldn't have been kinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I kink?
could you kink?
could she kink?
could we kink?
could you kink?
could they kink? 	could I be kinking?
could you be kinking?
could she be kinking?
could we be kinking?
could you be kinking?
could they be kinking? 	could I have kinked?
could you have kinked?
could she have kinked?
could we have kinked?
could you have kinked?
could they have kinked? 	could I have been kinking?
could you have been kinking?
could she have been kinking?
could we have been kinking?
could you have been kinking?
could they have been kinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I kink?
couldn't you kink?
couldn't she kink?
couldn't we kink?
couldn't you kink?
couldn't they kink? 	couldn't I be kinking?
couldn't you be kinking?
couldn't she be kinking?
couldn't we be kinking?
couldn't you be kinking?
couldn't they be kinking? 	couldn't I have kinked?
couldn't you have kinked?
couldn't she have kinked?
couldn't we have kinked?
couldn't you have kinked?
couldn't they have kinked? 	couldn't I have been kinking?
couldn't you have been kinking?
couldn't she have been kinking?
couldn't we have been kinking?
couldn't you have been kinking?
couldn't they have been kinking?