I can pollute you can pollute she can pollute we can pollute you can pollute they can pollute
V-ing form
I can be polluting you can be polluting she can be polluting we can be polluting you can be polluting they can be polluting
Perfect
I can have polluted you can have polluted she can have polluted we can have polluted you can have polluted they can have polluted
V-ing perfect
I can have been polluting you can have been polluting she can have been polluting we can have been polluting you can have been polluting they can have been polluting
Negation
Simple form
I cannot pollute you cannot pollute she cannot pollute we cannot pollute you cannot pollute they cannot pollute
V-ing form
I cannot be polluting you cannot be polluting she cannot be polluting we cannot be polluting you cannot be polluting they cannot be polluting
Perfect
I cannot have polluted you cannot have polluted she cannot have polluted we cannot have polluted you cannot have polluted they cannot have polluted
V-ing perfect
I cannot have been polluting you cannot have been polluting she cannot have been polluting we cannot have been polluting you cannot have been polluting they cannot have been polluting
Interrogative form
Simple form
can I pollute? can you pollute? can she pollute? can we pollute? can you pollute? can they pollute?
V-ing form
can I be polluting? can you be polluting? can she be polluting? can we be polluting? can you be polluting? can they be polluting?
Perfect
can I have polluted? can you have polluted? can she have polluted? can we have polluted? can you have polluted? can they have polluted?
V-ing perfect
can I have been polluting? can you have been polluting? can she have been polluting? can we have been polluting? can you have been polluting? can they have been polluting?
Interro-negative form
Simple form
can I not pollute? can you not pollute? can she not pollute? can we not pollute? can you not pollute? can they not pollute?
V-ing form
can I not be polluting? can you not be polluting? can she not be polluting? can we not be polluting? can you not be polluting? can they not be polluting?
Perfect
can I not have polluted? can you not have polluted? can she not have polluted? can we not have polluted? can you not have polluted? can they not have polluted?
V-ing perfect
can I not have been polluting? can you not have been polluting? can she not have been polluting? can we not have been polluting? can you not have been polluting? can they not have been polluting?