I can trap you can trap he can trap we can trap you can trap they can trap
V-ing form
I can be trapping you can be trapping he can be trapping we can be trapping you can be trapping they can be trapping
Perfect
I can have trapped you can have trapped he 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 he 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 he 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 he 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 he 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 he 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 he trap? can we trap? can you trap? can they trap?
V-ing form
can I be trapping? can you be trapping? can he be trapping? can we be trapping? can you be trapping? can they be trapping?
Perfect
can I have trapped? can you have trapped? can he 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 he 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 he 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 he 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 he 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 he have been trapping? can't we have been trapping? can't you have been trapping? can't they have been trapping?