English verb conjugation
COULD ORDER

Regular verb: order - ordered - ordered

Affirmation

Simple form	V-ing form
I could order you could order he could order we could order you could order they could order	I could be ordering you could be ordering he could be ordering we could be ordering you could be ordering they could be ordering
Perfect	V-ing perfect
I could have ordered you could have ordered he could have ordered we could have ordered you could have ordered they could have ordered	I could have been ordering you could have been ordering he could have been ordering we could have been ordering you could have been ordering they could have been ordering

Negation

Simple form	V-ing form
I couldn't order you couldn't order he couldn't order we couldn't order you couldn't order they couldn't order	I couldn't be ordering you couldn't be ordering he couldn't be ordering we couldn't be ordering you couldn't be ordering they couldn't be ordering
Perfect	V-ing perfect
I couldn't have ordered you couldn't have ordered he couldn't have ordered we couldn't have ordered you couldn't have ordered they couldn't have ordered	I couldn't have been ordering you couldn't have been ordering he couldn't have been ordering we couldn't have been ordering you couldn't have been ordering they couldn't have been ordering

Interrogative form

Simple form	V-ing form
could I order? could you order? could he order? could we order? could you order? could they order?	could I be ordering? could you be ordering? could he be ordering? could we be ordering? could you be ordering? could they be ordering?
Perfect	V-ing perfect
could I have ordered? could you have ordered? could he have ordered? could we have ordered? could you have ordered? could they have ordered?	could I have been ordering? could you have been ordering? could he have been ordering? could we have been ordering? could you have been ordering? could they have been ordering?

Interro-negative form

Simple form	V-ing form
couldn't I order? couldn't you order? couldn't he order? couldn't we order? couldn't you order? couldn't they order?	couldn't I be ordering? couldn't you be ordering? couldn't he be ordering? couldn't we be ordering? couldn't you be ordering? couldn't they be ordering?
Perfect	V-ing perfect
couldn't I have ordered? couldn't you have ordered? couldn't he have ordered? couldn't we have ordered? couldn't you have ordered? couldn't they have ordered?	couldn't I have been ordering? couldn't you have been ordering? couldn't he have been ordering? couldn't we have been ordering? couldn't you have been ordering? couldn't they have been ordering?