could deprave
Regular verb: deprave - depraved- depraved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could deprave
you could deprave
he could deprave
we could deprave
you could deprave
they could deprave 	I could be depraving
you could be depraving
he could be depraving
we could be depraving
you could be depraving
they could be depraving	I could have depraved
you could have depraved
he could have depraved
we could have depraved
you could have depraved
they could have depraved	I could have been depraving
you could have been depraving
he could have been depraving
we could have been depraving
you could have been depraving
they could have been depraving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't deprave
you couldn't deprave
he couldn't deprave
we couldn't deprave
you couldn't deprave
they couldn't deprave 	I couldn't be depraving
you couldn't be depraving
he couldn't be depraving
we couldn't be depraving
you couldn't be depraving
they couldn't be depraving	I couldn't have depraved
you couldn't have depraved
he couldn't have depraved
we couldn't have depraved
you couldn't have depraved
they couldn't have depraved	I couldn't have been depraving
you couldn't have been depraving
he couldn't have been depraving
we couldn't have been depraving
you couldn't have been depraving
they couldn't have been depraving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I deprave?
could you deprave?
could he deprave?
could we deprave?
could you deprave?
could they deprave? 	could I be depraving?
could you be depraving?
could he be depraving?
could we be depraving?
could you be depraving?
could they be depraving? 	could I have depraved?
could you have depraved?
could he have depraved?
could we have depraved?
could you have depraved?
could they have depraved? 	could I have been depraving?
could you have been depraving?
could he have been depraving?
could we have been depraving?
could you have been depraving?
could they have been depraving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I deprave?
couldn't you deprave?
couldn't he deprave?
couldn't we deprave?
couldn't you deprave?
couldn't they deprave? 	couldn't I be depraving?
couldn't you be depraving?
couldn't he be depraving?
couldn't we be depraving?
couldn't you be depraving?
couldn't they be depraving? 	couldn't I have depraved?
couldn't you have depraved?
couldn't he have depraved?
couldn't we have depraved?
couldn't you have depraved?
couldn't they have depraved? 	couldn't I have been depraving?
couldn't you have been depraving?
couldn't he have been depraving?
couldn't we have been depraving?
couldn't you have been depraving?
couldn't they have been depraving?