could crankle
Regular verb: crankle - crankled- crankled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could crankle
you could crankle
he could crankle
we could crankle
you could crankle
they could crankle 	I could be crankling
you could be crankling
he could be crankling
we could be crankling
you could be crankling
they could be crankling	I could have crankled
you could have crankled
he could have crankled
we could have crankled
you could have crankled
they could have crankled	I could have been crankling
you could have been crankling
he could have been crankling
we could have been crankling
you could have been crankling
they could have been crankling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't crankle
you couldn't crankle
he couldn't crankle
we couldn't crankle
you couldn't crankle
they couldn't crankle 	I couldn't be crankling
you couldn't be crankling
he couldn't be crankling
we couldn't be crankling
you couldn't be crankling
they couldn't be crankling	I couldn't have crankled
you couldn't have crankled
he couldn't have crankled
we couldn't have crankled
you couldn't have crankled
they couldn't have crankled	I couldn't have been crankling
you couldn't have been crankling
he couldn't have been crankling
we couldn't have been crankling
you couldn't have been crankling
they couldn't have been crankling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I crankle?
could you crankle?
could he crankle?
could we crankle?
could you crankle?
could they crankle? 	could I be crankling?
could you be crankling?
could he be crankling?
could we be crankling?
could you be crankling?
could they be crankling? 	could I have crankled?
could you have crankled?
could he have crankled?
could we have crankled?
could you have crankled?
could they have crankled? 	could I have been crankling?
could you have been crankling?
could he have been crankling?
could we have been crankling?
could you have been crankling?
could they have been crankling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I crankle?
couldn't you crankle?
couldn't he crankle?
couldn't we crankle?
couldn't you crankle?
couldn't they crankle? 	couldn't I be crankling?
couldn't you be crankling?
couldn't he be crankling?
couldn't we be crankling?
couldn't you be crankling?
couldn't they be crankling? 	couldn't I have crankled?
couldn't you have crankled?
couldn't he have crankled?
couldn't we have crankled?
couldn't you have crankled?
couldn't they have crankled? 	couldn't I have been crankling?
couldn't you have been crankling?
couldn't he have been crankling?
couldn't we have been crankling?
couldn't you have been crankling?
couldn't they have been crankling?