could slink
Irregular verb: slink - slunk- slunk

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could slink
you could slink
he could slink
we could slink
you could slink
they could slink 	I could be slinking
you could be slinking
he could be slinking
we could be slinking
you could be slinking
they could be slinking	I could have slunk
you could have slunk
he could have slunk
we could have slunk
you could have slunk
they could have slunk	I could have been slinking
you could have been slinking
he could have been slinking
we could have been slinking
you could have been slinking
they could have been slinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not slink
you could not slink
he could not slink
we could not slink
you could not slink
they could not slink 	I could not be slinking
you could not be slinking
he could not be slinking
we could not be slinking
you could not be slinking
they could not be slinking	I could not have slunk
you could not have slunk
he could not have slunk
we could not have slunk
you could not have slunk
they could not have slunk	I could not have been slinking
you could not have been slinking
he could not have been slinking
we could not have been slinking
you could not have been slinking
they could not have been slinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I slink?
could you slink?
could he slink?
could we slink?
could you slink?
could they slink? 	could I be slinking?
could you be slinking?
could he be slinking?
could we be slinking?
could you be slinking?
could they be slinking? 	could I have slunk?
could you have slunk?
could he have slunk?
could we have slunk?
could you have slunk?
could they have slunk? 	could I have been slinking?
could you have been slinking?
could he have been slinking?
could we have been slinking?
could you have been slinking?
could they have been slinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not slink?
could you not slink?
could he not slink?
could we not slink?
could you not slink?
could they not slink? 	could I not be slinking?
could you not be slinking?
could he not be slinking?
could we not be slinking?
could you not be slinking?
could they not be slinking? 	could I not have slunk?
could you not have slunk?
could he not have slunk?
could we not have slunk?
could you not have slunk?
could they not have slunk? 	could I not have been slinking?
could you not have been slinking?
could he not have been slinking?
could we not have been slinking?
could you not have been slinking?
could they not have been slinking?