I can brad you can brad he can brad we can brad you can brad they can brad
V-ing form
I can be brading you can be brading he can be brading we can be brading you can be brading they can be brading
Perfect
I can have braded you can have braded he can have braded we can have braded you can have braded they can have braded
V-ing perfect
I can have been brading you can have been brading he can have been brading we can have been brading you can have been brading they can have been brading
Negation
Simple form
I cannot brad you cannot brad he cannot brad we cannot brad you cannot brad they cannot brad
V-ing form
I cannot be brading you cannot be brading he cannot be brading we cannot be brading you cannot be brading they cannot be brading
Perfect
I cannot have braded you cannot have braded he cannot have braded we cannot have braded you cannot have braded they cannot have braded
V-ing perfect
I cannot have been brading you cannot have been brading he cannot have been brading we cannot have been brading you cannot have been brading they cannot have been brading
Interrogative form
Simple form
can I brad? can you brad? can he brad? can we brad? can you brad? can they brad?
V-ing form
can I be brading? can you be brading? can he be brading? can we be brading? can you be brading? can they be brading?
Perfect
can I have braded? can you have braded? can he have braded? can we have braded? can you have braded? can they have braded?
V-ing perfect
can I have been brading? can you have been brading? can he have been brading? can we have been brading? can you have been brading? can they have been brading?
Interro-negative form
Simple form
can I not brad? can you not brad? can he not brad? can we not brad? can you not brad? can they not brad?
V-ing form
can I not be brading? can you not be brading? can he not be brading? can we not be brading? can you not be brading? can they not be brading?
Perfect
can I not have braded? can you not have braded? can he not have braded? can we not have braded? can you not have braded? can they not have braded?
V-ing perfect
can I not have been brading? can you not have been brading? can he not have been brading? can we not have been brading? can you not have been brading? can they not have been brading?