I can oxidize you can oxidize she can oxidize we can oxidize you can oxidize they can oxidize
V-ing form
I can be oxidizing you can be oxidizing she can be oxidizing we can be oxidizing you can be oxidizing they can be oxidizing
Perfect
I can have oxidized you can have oxidized she can have oxidized we can have oxidized you can have oxidized they can have oxidized
V-ing perfect
I can have been oxidizing you can have been oxidizing she can have been oxidizing we can have been oxidizing you can have been oxidizing they can have been oxidizing
Negation
Simple form
I cannot oxidize you cannot oxidize she cannot oxidize we cannot oxidize you cannot oxidize they cannot oxidize
V-ing form
I cannot be oxidizing you cannot be oxidizing she cannot be oxidizing we cannot be oxidizing you cannot be oxidizing they cannot be oxidizing
Perfect
I cannot have oxidized you cannot have oxidized she cannot have oxidized we cannot have oxidized you cannot have oxidized they cannot have oxidized
V-ing perfect
I cannot have been oxidizing you cannot have been oxidizing she cannot have been oxidizing we cannot have been oxidizing you cannot have been oxidizing they cannot have been oxidizing
Interrogative form
Simple form
can I oxidize? can you oxidize? can she oxidize? can we oxidize? can you oxidize? can they oxidize?
V-ing form
can I be oxidizing? can you be oxidizing? can she be oxidizing? can we be oxidizing? can you be oxidizing? can they be oxidizing?
Perfect
can I have oxidized? can you have oxidized? can she have oxidized? can we have oxidized? can you have oxidized? can they have oxidized?
V-ing perfect
can I have been oxidizing? can you have been oxidizing? can she have been oxidizing? can we have been oxidizing? can you have been oxidizing? can they have been oxidizing?
Interro-negative form
Simple form
can I not oxidize? can you not oxidize? can she not oxidize? can we not oxidize? can you not oxidize? can they not oxidize?
V-ing form
can I not be oxidizing? can you not be oxidizing? can she not be oxidizing? can we not be oxidizing? can you not be oxidizing? can they not be oxidizing?
Perfect
can I not have oxidized? can you not have oxidized? can she not have oxidized? can we not have oxidized? can you not have oxidized? can they not have oxidized?
V-ing perfect
can I not have been oxidizing? can you not have been oxidizing? can she not have been oxidizing? can we not have been oxidizing? can you not have been oxidizing? can they not have been oxidizing?