could slue
Regular verb: slue - slued- slued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could slue
you could slue
she could slue
we could slue
you could slue
they could slue 	I could be sluing
you could be sluing
she could be sluing
we could be sluing
you could be sluing
they could be sluing	I could have slued
you could have slued
she could have slued
we could have slued
you could have slued
they could have slued	I could have been sluing
you could have been sluing
she could have been sluing
we could have been sluing
you could have been sluing
they could have been sluing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't slue
you couldn't slue
she couldn't slue
we couldn't slue
you couldn't slue
they couldn't slue 	I couldn't be sluing
you couldn't be sluing
she couldn't be sluing
we couldn't be sluing
you couldn't be sluing
they couldn't be sluing	I couldn't have slued
you couldn't have slued
she couldn't have slued
we couldn't have slued
you couldn't have slued
they couldn't have slued	I couldn't have been sluing
you couldn't have been sluing
she couldn't have been sluing
we couldn't have been sluing
you couldn't have been sluing
they couldn't have been sluing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I slue?
could you slue?
could she slue?
could we slue?
could you slue?
could they slue? 	could I be sluing?
could you be sluing?
could she be sluing?
could we be sluing?
could you be sluing?
could they be sluing? 	could I have slued?
could you have slued?
could she have slued?
could we have slued?
could you have slued?
could they have slued? 	could I have been sluing?
could you have been sluing?
could she have been sluing?
could we have been sluing?
could you have been sluing?
could they have been sluing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I slue?
couldn't you slue?
couldn't she slue?
couldn't we slue?
couldn't you slue?
couldn't they slue? 	couldn't I be sluing?
couldn't you be sluing?
couldn't she be sluing?
couldn't we be sluing?
couldn't you be sluing?
couldn't they be sluing? 	couldn't I have slued?
couldn't you have slued?
couldn't she have slued?
couldn't we have slued?
couldn't you have slued?
couldn't they have slued? 	couldn't I have been sluing?
couldn't you have been sluing?
couldn't she have been sluing?
couldn't we have been sluing?
couldn't you have been sluing?
couldn't they have been sluing?