English verb conjugation
COULD BACKORDER

Regular verb: backorder - backordered - backordered

Affirmation

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