I can brad you can brad she can brad we can brad you can brad they can brad
V-ing form
I can be brading you can be brading she can be brading we can be brading you can be brading they can be brading
Perfect
I can have braded you can have braded she 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 she 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 she cannot brad we cannot brad you cannot brad they cannot brad
V-ing form
I cannot be brading you cannot be brading she cannot be brading we cannot be brading you cannot be brading they cannot be brading
Perfect
I cannot have braded you cannot have braded she 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 she 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 she brad? can we brad? can you brad? can they brad?
V-ing form
can I be brading? can you be brading? can she be brading? can we be brading? can you be brading? can they be brading?
Perfect
can I have braded? can you have braded? can she 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 she 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 she 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 she 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 she 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 she not have been brading? can we not have been brading? can you not have been brading? can they not have been brading?