could slate
Regular verb: slate - slated- slated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could slate
you could slate
she could slate
we could slate
you could slate
they could slate 	I could be slating
you could be slating
she could be slating
we could be slating
you could be slating
they could be slating	I could have slated
you could have slated
she could have slated
we could have slated
you could have slated
they could have slated	I could have been slating
you could have been slating
she could have been slating
we could have been slating
you could have been slating
they could have been slating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't slate
you couldn't slate
she couldn't slate
we couldn't slate
you couldn't slate
they couldn't slate 	I couldn't be slating
you couldn't be slating
she couldn't be slating
we couldn't be slating
you couldn't be slating
they couldn't be slating	I couldn't have slated
you couldn't have slated
she couldn't have slated
we couldn't have slated
you couldn't have slated
they couldn't have slated	I couldn't have been slating
you couldn't have been slating
she couldn't have been slating
we couldn't have been slating
you couldn't have been slating
they couldn't have been slating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I slate?
could you slate?
could she slate?
could we slate?
could you slate?
could they slate? 	could I be slating?
could you be slating?
could she be slating?
could we be slating?
could you be slating?
could they be slating? 	could I have slated?
could you have slated?
could she have slated?
could we have slated?
could you have slated?
could they have slated? 	could I have been slating?
could you have been slating?
could she have been slating?
could we have been slating?
could you have been slating?
could they have been slating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I slate?
couldn't you slate?
couldn't she slate?
couldn't we slate?
couldn't you slate?
couldn't they slate? 	couldn't I be slating?
couldn't you be slating?
couldn't she be slating?
couldn't we be slating?
couldn't you be slating?
couldn't they be slating? 	couldn't I have slated?
couldn't you have slated?
couldn't she have slated?
couldn't we have slated?
couldn't you have slated?
couldn't they have slated? 	couldn't I have been slating?
couldn't you have been slating?
couldn't she have been slating?
couldn't we have been slating?
couldn't you have been slating?
couldn't they have been slating?