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 can't pollute you can't pollute she can't pollute we can't pollute you can't pollute they can't pollute
V-ing form
I can't be polluting you can't be polluting she can't be polluting we can't be polluting you can't be polluting they can't be polluting
Perfect
I can't have polluted you can't have polluted she can't have polluted we can't have polluted you can't have polluted they can't have polluted
V-ing perfect
I can't have been polluting you can't have been polluting she can't have been polluting we can't have been polluting you can't have been polluting they can't 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't I pollute? can't you pollute? can't she pollute? can't we pollute? can't you pollute? can't they pollute?
V-ing form
can't I be polluting? can't you be polluting? can't she be polluting? can't we be polluting? can't you be polluting? can't they be polluting?
Perfect
can't I have polluted? can't you have polluted? can't she have polluted? can't we have polluted? can't you have polluted? can't they have polluted?
V-ing perfect
can't I have been polluting? can't you have been polluting? can't she have been polluting? can't we have been polluting? can't you have been polluting? can't they have been polluting?