English verb conjugation
COULD ROBE

Regular verb: robe - robed - robed

Affirmation

Simple form	V-ing form
I could robe you could robe he could robe we could robe you could robe they could robe	I could be robing you could be robing he could be robing we could be robing you could be robing they could be robing
Perfect	V-ing perfect
I could have robed you could have robed he could have robed we could have robed you could have robed they could have robed	I could have been robing you could have been robing he could have been robing we could have been robing you could have been robing they could have been robing

Negation

Simple form	V-ing form
I could not robe you could not robe he could not robe we could not robe you could not robe they could not robe	I could not be robing you could not be robing he could not be robing we could not be robing you could not be robing they could not be robing
Perfect	V-ing perfect
I could not have robed you could not have robed he could not have robed we could not have robed you could not have robed they could not have robed	I could not have been robing you could not have been robing he could not have been robing we could not have been robing you could not have been robing they could not have been robing

Interrogative form

Simple form	V-ing form
could I robe? could you robe? could he robe? could we robe? could you robe? could they robe?	could I be robing? could you be robing? could he be robing? could we be robing? could you be robing? could they be robing?
Perfect	V-ing perfect
could I have robed? could you have robed? could he have robed? could we have robed? could you have robed? could they have robed?	could I have been robing? could you have been robing? could he have been robing? could we have been robing? could you have been robing? could they have been robing?

Interro-negative form

Simple form	V-ing form
could I not robe? could you not robe? could he not robe? could we not robe? could you not robe? could they not robe?	could I not be robing? could you not be robing? could he not be robing? could we not be robing? could you not be robing? could they not be robing?
Perfect	V-ing perfect
could I not have robed? could you not have robed? could he not have robed? could we not have robed? could you not have robed? could they not have robed?	could I not have been robing? could you not have been robing? could he not have been robing? could we not have been robing? could you not have been robing? could they not have been robing?