I can whitewash you can whitewash he can whitewash we can whitewash you can whitewash they can whitewash
V-ing form
I can be whitewashing you can be whitewashing he can be whitewashing we can be whitewashing you can be whitewashing they can be whitewashing
Perfect
I can have whitewashed you can have whitewashed he can have whitewashed we can have whitewashed you can have whitewashed they can have whitewashed
V-ing perfect
I can have been whitewashing you can have been whitewashing he can have been whitewashing we can have been whitewashing you can have been whitewashing they can have been whitewashing
Negation
Simple form
I cannot whitewash you cannot whitewash he cannot whitewash we cannot whitewash you cannot whitewash they cannot whitewash
V-ing form
I cannot be whitewashing you cannot be whitewashing he cannot be whitewashing we cannot be whitewashing you cannot be whitewashing they cannot be whitewashing
Perfect
I cannot have whitewashed you cannot have whitewashed he cannot have whitewashed we cannot have whitewashed you cannot have whitewashed they cannot have whitewashed
V-ing perfect
I cannot have been whitewashing you cannot have been whitewashing he cannot have been whitewashing we cannot have been whitewashing you cannot have been whitewashing they cannot have been whitewashing
Interrogative form
Simple form
can I whitewash? can you whitewash? can he whitewash? can we whitewash? can you whitewash? can they whitewash?
V-ing form
can I be whitewashing? can you be whitewashing? can he be whitewashing? can we be whitewashing? can you be whitewashing? can they be whitewashing?
Perfect
can I have whitewashed? can you have whitewashed? can he have whitewashed? can we have whitewashed? can you have whitewashed? can they have whitewashed?
V-ing perfect
can I have been whitewashing? can you have been whitewashing? can he have been whitewashing? can we have been whitewashing? can you have been whitewashing? can they have been whitewashing?
Interro-negative form
Simple form
can I not whitewash? can you not whitewash? can he not whitewash? can we not whitewash? can you not whitewash? can they not whitewash?
V-ing form
can I not be whitewashing? can you not be whitewashing? can he not be whitewashing? can we not be whitewashing? can you not be whitewashing? can they not be whitewashing?
Perfect
can I not have whitewashed? can you not have whitewashed? can he not have whitewashed? can we not have whitewashed? can you not have whitewashed? can they not have whitewashed?
V-ing perfect
can I not have been whitewashing? can you not have been whitewashing? can he not have been whitewashing? can we not have been whitewashing? can you not have been whitewashing? can they not have been whitewashing?