could predeliver
Regular verb: predeliver - predelivered- predelivered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could predeliver
you could predeliver
she could predeliver
we could predeliver
you could predeliver
they could predeliver 	I could be predelivering
you could be predelivering
she could be predelivering
we could be predelivering
you could be predelivering
they could be predelivering	I could have predelivered
you could have predelivered
she could have predelivered
we could have predelivered
you could have predelivered
they could have predelivered	I could have been predelivering
you could have been predelivering
she could have been predelivering
we could have been predelivering
you could have been predelivering
they could have been predelivering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't predeliver
you couldn't predeliver
she couldn't predeliver
we couldn't predeliver
you couldn't predeliver
they couldn't predeliver 	I couldn't be predelivering
you couldn't be predelivering
she couldn't be predelivering
we couldn't be predelivering
you couldn't be predelivering
they couldn't be predelivering	I couldn't have predelivered
you couldn't have predelivered
she couldn't have predelivered
we couldn't have predelivered
you couldn't have predelivered
they couldn't have predelivered	I couldn't have been predelivering
you couldn't have been predelivering
she couldn't have been predelivering
we couldn't have been predelivering
you couldn't have been predelivering
they couldn't have been predelivering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I predeliver?
could you predeliver?
could she predeliver?
could we predeliver?
could you predeliver?
could they predeliver? 	could I be predelivering?
could you be predelivering?
could she be predelivering?
could we be predelivering?
could you be predelivering?
could they be predelivering? 	could I have predelivered?
could you have predelivered?
could she have predelivered?
could we have predelivered?
could you have predelivered?
could they have predelivered? 	could I have been predelivering?
could you have been predelivering?
could she have been predelivering?
could we have been predelivering?
could you have been predelivering?
could they have been predelivering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I predeliver?
couldn't you predeliver?
couldn't she predeliver?
couldn't we predeliver?
couldn't you predeliver?
couldn't they predeliver? 	couldn't I be predelivering?
couldn't you be predelivering?
couldn't she be predelivering?
couldn't we be predelivering?
couldn't you be predelivering?
couldn't they be predelivering? 	couldn't I have predelivered?
couldn't you have predelivered?
couldn't she have predelivered?
couldn't we have predelivered?
couldn't you have predelivered?
couldn't they have predelivered? 	couldn't I have been predelivering?
couldn't you have been predelivering?
couldn't she have been predelivering?
couldn't we have been predelivering?
couldn't you have been predelivering?
couldn't they have been predelivering?