could lick
Regular verb: lick - licked- licked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could lick
you could lick
he could lick
we could lick
you could lick
they could lick 	I could be licking
you could be licking
he could be licking
we could be licking
you could be licking
they could be licking	I could have licked
you could have licked
he could have licked
we could have licked
you could have licked
they could have licked	I could have been licking
you could have been licking
he could have been licking
we could have been licking
you could have been licking
they could have been licking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't lick
you couldn't lick
he couldn't lick
we couldn't lick
you couldn't lick
they couldn't lick 	I couldn't be licking
you couldn't be licking
he couldn't be licking
we couldn't be licking
you couldn't be licking
they couldn't be licking	I couldn't have licked
you couldn't have licked
he couldn't have licked
we couldn't have licked
you couldn't have licked
they couldn't have licked	I couldn't have been licking
you couldn't have been licking
he couldn't have been licking
we couldn't have been licking
you couldn't have been licking
they couldn't have been licking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I lick?
could you lick?
could he lick?
could we lick?
could you lick?
could they lick? 	could I be licking?
could you be licking?
could he be licking?
could we be licking?
could you be licking?
could they be licking? 	could I have licked?
could you have licked?
could he have licked?
could we have licked?
could you have licked?
could they have licked? 	could I have been licking?
could you have been licking?
could he have been licking?
could we have been licking?
could you have been licking?
could they have been licking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I lick?
couldn't you lick?
couldn't he lick?
couldn't we lick?
couldn't you lick?
couldn't they lick? 	couldn't I be licking?
couldn't you be licking?
couldn't he be licking?
couldn't we be licking?
couldn't you be licking?
couldn't they be licking? 	couldn't I have licked?
couldn't you have licked?
couldn't he have licked?
couldn't we have licked?
couldn't you have licked?
couldn't they have licked? 	couldn't I have been licking?
couldn't you have been licking?
couldn't he have been licking?
couldn't we have been licking?
couldn't you have been licking?
couldn't they have been licking?