I can trap you can trap she can trap we can trap you can trap they can trap
V-ing form
I can be trapping you can be trapping she can be trapping we can be trapping you can be trapping they can be trapping
Perfect
I can have trapped you can have trapped she can have trapped we can have trapped you can have trapped they can have trapped
V-ing perfect
I can have been trapping you can have been trapping she can have been trapping we can have been trapping you can have been trapping they can have been trapping
Negation
Simple form
I can't trap you can't trap she can't trap we can't trap you can't trap they can't trap
V-ing form
I can't be trapping you can't be trapping she can't be trapping we can't be trapping you can't be trapping they can't be trapping
Perfect
I can't have trapped you can't have trapped she can't have trapped we can't have trapped you can't have trapped they can't have trapped
V-ing perfect
I can't have been trapping you can't have been trapping she can't have been trapping we can't have been trapping you can't have been trapping they can't have been trapping
Interrogative form
Simple form
can I trap? can you trap? can she trap? can we trap? can you trap? can they trap?
V-ing form
can I be trapping? can you be trapping? can she be trapping? can we be trapping? can you be trapping? can they be trapping?
Perfect
can I have trapped? can you have trapped? can she have trapped? can we have trapped? can you have trapped? can they have trapped?
V-ing perfect
can I have been trapping? can you have been trapping? can she have been trapping? can we have been trapping? can you have been trapping? can they have been trapping?
Interro-negative form
Simple form
can't I trap? can't you trap? can't she trap? can't we trap? can't you trap? can't they trap?
V-ing form
can't I be trapping? can't you be trapping? can't she be trapping? can't we be trapping? can't you be trapping? can't they be trapping?
Perfect
can't I have trapped? can't you have trapped? can't she have trapped? can't we have trapped? can't you have trapped? can't they have trapped?
V-ing perfect
can't I have been trapping? can't you have been trapping? can't she have been trapping? can't we have been trapping? can't you have been trapping? can't they have been trapping?