could stickle
Regular verb: stickle - stickled- stickled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could stickle
you could stickle
he could stickle
we could stickle
you could stickle
they could stickle 	I could be stickling
you could be stickling
he could be stickling
we could be stickling
you could be stickling
they could be stickling	I could have stickled
you could have stickled
he could have stickled
we could have stickled
you could have stickled
they could have stickled	I could have been stickling
you could have been stickling
he could have been stickling
we could have been stickling
you could have been stickling
they could have been stickling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not stickle
you could not stickle
he could not stickle
we could not stickle
you could not stickle
they could not stickle 	I could not be stickling
you could not be stickling
he could not be stickling
we could not be stickling
you could not be stickling
they could not be stickling	I could not have stickled
you could not have stickled
he could not have stickled
we could not have stickled
you could not have stickled
they could not have stickled	I could not have been stickling
you could not have been stickling
he could not have been stickling
we could not have been stickling
you could not have been stickling
they could not have been stickling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I stickle?
could you stickle?
could he stickle?
could we stickle?
could you stickle?
could they stickle? 	could I be stickling?
could you be stickling?
could he be stickling?
could we be stickling?
could you be stickling?
could they be stickling? 	could I have stickled?
could you have stickled?
could he have stickled?
could we have stickled?
could you have stickled?
could they have stickled? 	could I have been stickling?
could you have been stickling?
could he have been stickling?
could we have been stickling?
could you have been stickling?
could they have been stickling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not stickle?
could you not stickle?
could he not stickle?
could we not stickle?
could you not stickle?
could they not stickle? 	could I not be stickling?
could you not be stickling?
could he not be stickling?
could we not be stickling?
could you not be stickling?
could they not be stickling? 	could I not have stickled?
could you not have stickled?
could he not have stickled?
could we not have stickled?
could you not have stickled?
could they not have stickled? 	could I not have been stickling?
could you not have been stickling?
could he not have been stickling?
could we not have been stickling?
could you not have been stickling?
could they not have been stickling?