I can precompress you can precompress he can precompress we can precompress you can precompress they can precompress
V-ing form
I can be precompressing you can be precompressing he can be precompressing we can be precompressing you can be precompressing they can be precompressing
Perfect
I can have precompressed you can have precompressed he can have precompressed we can have precompressed you can have precompressed they can have precompressed
V-ing perfect
I can have been precompressing you can have been precompressing he can have been precompressing we can have been precompressing you can have been precompressing they can have been precompressing
Negation
Simple form
I cannot precompress you cannot precompress he cannot precompress we cannot precompress you cannot precompress they cannot precompress
V-ing form
I cannot be precompressing you cannot be precompressing he cannot be precompressing we cannot be precompressing you cannot be precompressing they cannot be precompressing
Perfect
I cannot have precompressed you cannot have precompressed he cannot have precompressed we cannot have precompressed you cannot have precompressed they cannot have precompressed
V-ing perfect
I cannot have been precompressing you cannot have been precompressing he cannot have been precompressing we cannot have been precompressing you cannot have been precompressing they cannot have been precompressing
Interrogative form
Simple form
can I precompress? can you precompress? can he precompress? can we precompress? can you precompress? can they precompress?
V-ing form
can I be precompressing? can you be precompressing? can he be precompressing? can we be precompressing? can you be precompressing? can they be precompressing?
Perfect
can I have precompressed? can you have precompressed? can he have precompressed? can we have precompressed? can you have precompressed? can they have precompressed?
V-ing perfect
can I have been precompressing? can you have been precompressing? can he have been precompressing? can we have been precompressing? can you have been precompressing? can they have been precompressing?
Interro-negative form
Simple form
can I not precompress? can you not precompress? can he not precompress? can we not precompress? can you not precompress? can they not precompress?
V-ing form
can I not be precompressing? can you not be precompressing? can he not be precompressing? can we not be precompressing? can you not be precompressing? can they not be precompressing?
Perfect
can I not have precompressed? can you not have precompressed? can he not have precompressed? can we not have precompressed? can you not have precompressed? can they not have precompressed?
V-ing perfect
can I not have been precompressing? can you not have been precompressing? can he not have been precompressing? can we not have been precompressing? can you not have been precompressing? can they not have been precompressing?