could drag
Regular verb: drag - dragged- dragged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could drag
you could drag
she could drag
we could drag
you could drag
they could drag 	I could be dragging
you could be dragging
she could be dragging
we could be dragging
you could be dragging
they could be dragging	I could have dragged
you could have dragged
she could have dragged
we could have dragged
you could have dragged
they could have dragged	I could have been dragging
you could have been dragging
she could have been dragging
we could have been dragging
you could have been dragging
they could have been dragging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't drag
you couldn't drag
she couldn't drag
we couldn't drag
you couldn't drag
they couldn't drag 	I couldn't be dragging
you couldn't be dragging
she couldn't be dragging
we couldn't be dragging
you couldn't be dragging
they couldn't be dragging	I couldn't have dragged
you couldn't have dragged
she couldn't have dragged
we couldn't have dragged
you couldn't have dragged
they couldn't have dragged	I couldn't have been dragging
you couldn't have been dragging
she couldn't have been dragging
we couldn't have been dragging
you couldn't have been dragging
they couldn't have been dragging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I drag?
could you drag?
could she drag?
could we drag?
could you drag?
could they drag? 	could I be dragging?
could you be dragging?
could she be dragging?
could we be dragging?
could you be dragging?
could they be dragging? 	could I have dragged?
could you have dragged?
could she have dragged?
could we have dragged?
could you have dragged?
could they have dragged? 	could I have been dragging?
could you have been dragging?
could she have been dragging?
could we have been dragging?
could you have been dragging?
could they have been dragging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I drag?
couldn't you drag?
couldn't she drag?
couldn't we drag?
couldn't you drag?
couldn't they drag? 	couldn't I be dragging?
couldn't you be dragging?
couldn't she be dragging?
couldn't we be dragging?
couldn't you be dragging?
couldn't they be dragging? 	couldn't I have dragged?
couldn't you have dragged?
couldn't she have dragged?
couldn't we have dragged?
couldn't you have dragged?
couldn't they have dragged? 	couldn't I have been dragging?
couldn't you have been dragging?
couldn't she have been dragging?
couldn't we have been dragging?
couldn't you have been dragging?
couldn't they have been dragging?