I can oxidize you can oxidize he can oxidize we can oxidize you can oxidize they can oxidize
V-ing form
I can be oxidizing you can be oxidizing he can be oxidizing we can be oxidizing you can be oxidizing they can be oxidizing
Perfect
I can have oxidized you can have oxidized he 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 he can have been oxidizing we can have been oxidizing you can have been oxidizing they can have been oxidizing
Negation
Simple form
I can't oxidize you can't oxidize he can't oxidize we can't oxidize you can't oxidize they can't oxidize
V-ing form
I can't be oxidizing you can't be oxidizing he can't be oxidizing we can't be oxidizing you can't be oxidizing they can't be oxidizing
Perfect
I can't have oxidized you can't have oxidized he can't have oxidized we can't have oxidized you can't have oxidized they can't have oxidized
V-ing perfect
I can't have been oxidizing you can't have been oxidizing he can't have been oxidizing we can't have been oxidizing you can't have been oxidizing they can't have been oxidizing
Interrogative form
Simple form
can I oxidize? can you oxidize? can he oxidize? can we oxidize? can you oxidize? can they oxidize?
V-ing form
can I be oxidizing? can you be oxidizing? can he be oxidizing? can we be oxidizing? can you be oxidizing? can they be oxidizing?
Perfect
can I have oxidized? can you have oxidized? can he 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 he have been oxidizing? can we have been oxidizing? can you have been oxidizing? can they have been oxidizing?
Interro-negative form
Simple form
can't I oxidize? can't you oxidize? can't he oxidize? can't we oxidize? can't you oxidize? can't they oxidize?
V-ing form
can't I be oxidizing? can't you be oxidizing? can't he be oxidizing? can't we be oxidizing? can't you be oxidizing? can't they be oxidizing?
Perfect
can't I have oxidized? can't you have oxidized? can't he have oxidized? can't we have oxidized? can't you have oxidized? can't they have oxidized?
V-ing perfect
can't I have been oxidizing? can't you have been oxidizing? can't he have been oxidizing? can't we have been oxidizing? can't you have been oxidizing? can't they have been oxidizing?