could plink
Regular verb: plink - plinked- plinked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could plink
you could plink
she could plink
we could plink
you could plink
they could plink 	I could be plinking
you could be plinking
she could be plinking
we could be plinking
you could be plinking
they could be plinking	I could have plinked
you could have plinked
she could have plinked
we could have plinked
you could have plinked
they could have plinked	I could have been plinking
you could have been plinking
she could have been plinking
we could have been plinking
you could have been plinking
they could have been plinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not plink
you could not plink
she could not plink
we could not plink
you could not plink
they could not plink 	I could not be plinking
you could not be plinking
she could not be plinking
we could not be plinking
you could not be plinking
they could not be plinking	I could not have plinked
you could not have plinked
she could not have plinked
we could not have plinked
you could not have plinked
they could not have plinked	I could not have been plinking
you could not have been plinking
she could not have been plinking
we could not have been plinking
you could not have been plinking
they could not have been plinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I plink?
could you plink?
could she plink?
could we plink?
could you plink?
could they plink? 	could I be plinking?
could you be plinking?
could she be plinking?
could we be plinking?
could you be plinking?
could they be plinking? 	could I have plinked?
could you have plinked?
could she have plinked?
could we have plinked?
could you have plinked?
could they have plinked? 	could I have been plinking?
could you have been plinking?
could she have been plinking?
could we have been plinking?
could you have been plinking?
could they have been plinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not plink?
could you not plink?
could she not plink?
could we not plink?
could you not plink?
could they not plink? 	could I not be plinking?
could you not be plinking?
could she not be plinking?
could we not be plinking?
could you not be plinking?
could they not be plinking? 	could I not have plinked?
could you not have plinked?
could she not have plinked?
could we not have plinked?
could you not have plinked?
could they not have plinked? 	could I not have been plinking?
could you not have been plinking?
could she not have been plinking?
could we not have been plinking?
could you not have been plinking?
could they not have been plinking?