I can destain you can destain he can destain we can destain you can destain they can destain
V-ing form
I can be destaining you can be destaining he can be destaining we can be destaining you can be destaining they can be destaining
Perfect
I can have destained you can have destained he can have destained we can have destained you can have destained they can have destained
V-ing perfect
I can have been destaining you can have been destaining he can have been destaining we can have been destaining you can have been destaining they can have been destaining
Negation
Simple form
I cannot destain you cannot destain he cannot destain we cannot destain you cannot destain they cannot destain
V-ing form
I cannot be destaining you cannot be destaining he cannot be destaining we cannot be destaining you cannot be destaining they cannot be destaining
Perfect
I cannot have destained you cannot have destained he cannot have destained we cannot have destained you cannot have destained they cannot have destained
V-ing perfect
I cannot have been destaining you cannot have been destaining he cannot have been destaining we cannot have been destaining you cannot have been destaining they cannot have been destaining
Interrogative form
Simple form
can I destain? can you destain? can he destain? can we destain? can you destain? can they destain?
V-ing form
can I be destaining? can you be destaining? can he be destaining? can we be destaining? can you be destaining? can they be destaining?
Perfect
can I have destained? can you have destained? can he have destained? can we have destained? can you have destained? can they have destained?
V-ing perfect
can I have been destaining? can you have been destaining? can he have been destaining? can we have been destaining? can you have been destaining? can they have been destaining?
Interro-negative form
Simple form
can I not destain? can you not destain? can he not destain? can we not destain? can you not destain? can they not destain?
V-ing form
can I not be destaining? can you not be destaining? can he not be destaining? can we not be destaining? can you not be destaining? can they not be destaining?
Perfect
can I not have destained? can you not have destained? can he not have destained? can we not have destained? can you not have destained? can they not have destained?
V-ing perfect
can I not have been destaining? can you not have been destaining? can he not have been destaining? can we not have been destaining? can you not have been destaining? can they not have been destaining?