could backorder
Regular verb: backorder - backordered- backordered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could backorder
you could backorder
she could backorder
we could backorder
you could backorder
they could backorder 	I could be backordering
you could be backordering
she could be backordering
we could be backordering
you could be backordering
they could be backordering	I could have backordered
you could have backordered
she could have backordered
we could have backordered
you could have backordered
they could have backordered	I could have been backordering
you could have been backordering
she could have been backordering
we could have been backordering
you could have been backordering
they could have been backordering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not backorder
you could not backorder
she could not backorder
we could not backorder
you could not backorder
they could not backorder 	I could not be backordering
you could not be backordering
she could not be backordering
we could not be backordering
you could not be backordering
they could not be backordering	I could not have backordered
you could not have backordered
she could not have backordered
we could not have backordered
you could not have backordered
they could not have backordered	I could not have been backordering
you could not have been backordering
she could not have been backordering
we could not have been backordering
you could not have been backordering
they could not have been backordering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I backorder?
could you backorder?
could she backorder?
could we backorder?
could you backorder?
could they backorder? 	could I be backordering?
could you be backordering?
could she be backordering?
could we be backordering?
could you be backordering?
could they be backordering? 	could I have backordered?
could you have backordered?
could she have backordered?
could we have backordered?
could you have backordered?
could they have backordered? 	could I have been backordering?
could you have been backordering?
could she have been backordering?
could we have been backordering?
could you have been backordering?
could they have been backordering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not backorder?
could you not backorder?
could she not backorder?
could we not backorder?
could you not backorder?
could they not backorder? 	could I not be backordering?
could you not be backordering?
could she not be backordering?
could we not be backordering?
could you not be backordering?
could they not be backordering? 	could I not have backordered?
could you not have backordered?
could she not have backordered?
could we not have backordered?
could you not have backordered?
could they not have backordered? 	could I not have been backordering?
could you not have been backordering?
could she not have been backordering?
could we not have been backordering?
could you not have been backordering?
could they not have been backordering?