I can thin you can thin he can thin we can thin you can thin they can thin
V-ing form
I can be thinning you can be thinning he can be thinning we can be thinning you can be thinning they can be thinning
Perfect
I can have thinned you can have thinned he can have thinned we can have thinned you can have thinned they can have thinned
V-ing perfect
I can have been thinning you can have been thinning he can have been thinning we can have been thinning you can have been thinning they can have been thinning
Negation
Simple form
I cannot thin you cannot thin he cannot thin we cannot thin you cannot thin they cannot thin
V-ing form
I cannot be thinning you cannot be thinning he cannot be thinning we cannot be thinning you cannot be thinning they cannot be thinning
Perfect
I cannot have thinned you cannot have thinned he cannot have thinned we cannot have thinned you cannot have thinned they cannot have thinned
V-ing perfect
I cannot have been thinning you cannot have been thinning he cannot have been thinning we cannot have been thinning you cannot have been thinning they cannot have been thinning
Interrogative form
Simple form
can I thin? can you thin? can he thin? can we thin? can you thin? can they thin?
V-ing form
can I be thinning? can you be thinning? can he be thinning? can we be thinning? can you be thinning? can they be thinning?
Perfect
can I have thinned? can you have thinned? can he have thinned? can we have thinned? can you have thinned? can they have thinned?
V-ing perfect
can I have been thinning? can you have been thinning? can he have been thinning? can we have been thinning? can you have been thinning? can they have been thinning?
Interro-negative form
Simple form
can I not thin? can you not thin? can he not thin? can we not thin? can you not thin? can they not thin?
V-ing form
can I not be thinning? can you not be thinning? can he not be thinning? can we not be thinning? can you not be thinning? can they not be thinning?
Perfect
can I not have thinned? can you not have thinned? can he not have thinned? can we not have thinned? can you not have thinned? can they not have thinned?
V-ing perfect
can I not have been thinning? can you not have been thinning? can he not have been thinning? can we not have been thinning? can you not have been thinning? can they not have been thinning?