I can brux you can brux he can brux we can brux you can brux they can brux
V-ing form
I can be bruxing you can be bruxing he can be bruxing we can be bruxing you can be bruxing they can be bruxing
Perfect
I can have bruxed you can have bruxed he can have bruxed we can have bruxed you can have bruxed they can have bruxed
V-ing perfect
I can have been bruxing you can have been bruxing he can have been bruxing we can have been bruxing you can have been bruxing they can have been bruxing
Negation
Simple form
I cannot brux you cannot brux he cannot brux we cannot brux you cannot brux they cannot brux
V-ing form
I cannot be bruxing you cannot be bruxing he cannot be bruxing we cannot be bruxing you cannot be bruxing they cannot be bruxing
Perfect
I cannot have bruxed you cannot have bruxed he cannot have bruxed we cannot have bruxed you cannot have bruxed they cannot have bruxed
V-ing perfect
I cannot have been bruxing you cannot have been bruxing he cannot have been bruxing we cannot have been bruxing you cannot have been bruxing they cannot have been bruxing
Interrogative form
Simple form
can I brux? can you brux? can he brux? can we brux? can you brux? can they brux?
V-ing form
can I be bruxing? can you be bruxing? can he be bruxing? can we be bruxing? can you be bruxing? can they be bruxing?
Perfect
can I have bruxed? can you have bruxed? can he have bruxed? can we have bruxed? can you have bruxed? can they have bruxed?
V-ing perfect
can I have been bruxing? can you have been bruxing? can he have been bruxing? can we have been bruxing? can you have been bruxing? can they have been bruxing?
Interro-negative form
Simple form
can I not brux? can you not brux? can he not brux? can we not brux? can you not brux? can they not brux?
V-ing form
can I not be bruxing? can you not be bruxing? can he not be bruxing? can we not be bruxing? can you not be bruxing? can they not be bruxing?
Perfect
can I not have bruxed? can you not have bruxed? can he not have bruxed? can we not have bruxed? can you not have bruxed? can they not have bruxed?
V-ing perfect
can I not have been bruxing? can you not have been bruxing? can he not have been bruxing? can we not have been bruxing? can you not have been bruxing? can they not have been bruxing?