I can omen you can omen he can omen we can omen you can omen they can omen
V-ing form
I can be omening you can be omening he can be omening we can be omening you can be omening they can be omening
Perfect
I can have omened you can have omened he can have omened we can have omened you can have omened they can have omened
V-ing perfect
I can have been omening you can have been omening he can have been omening we can have been omening you can have been omening they can have been omening
Negation
Simple form
I cannot omen you cannot omen he cannot omen we cannot omen you cannot omen they cannot omen
V-ing form
I cannot be omening you cannot be omening he cannot be omening we cannot be omening you cannot be omening they cannot be omening
Perfect
I cannot have omened you cannot have omened he cannot have omened we cannot have omened you cannot have omened they cannot have omened
V-ing perfect
I cannot have been omening you cannot have been omening he cannot have been omening we cannot have been omening you cannot have been omening they cannot have been omening
Interrogative form
Simple form
can I omen? can you omen? can he omen? can we omen? can you omen? can they omen?
V-ing form
can I be omening? can you be omening? can he be omening? can we be omening? can you be omening? can they be omening?
Perfect
can I have omened? can you have omened? can he have omened? can we have omened? can you have omened? can they have omened?
V-ing perfect
can I have been omening? can you have been omening? can he have been omening? can we have been omening? can you have been omening? can they have been omening?
Interro-negative form
Simple form
can I not omen? can you not omen? can he not omen? can we not omen? can you not omen? can they not omen?
V-ing form
can I not be omening? can you not be omening? can he not be omening? can we not be omening? can you not be omening? can they not be omening?
Perfect
can I not have omened? can you not have omened? can he not have omened? can we not have omened? can you not have omened? can they not have omened?
V-ing perfect
can I not have been omening? can you not have been omening? can he not have been omening? can we not have been omening? can you not have been omening? can they not have been omening?