I can trash you can trash he can trash we can trash you can trash they can trash
V-ing form
I can be trashing you can be trashing he can be trashing we can be trashing you can be trashing they can be trashing
Perfect
I can have trashed you can have trashed he can have trashed we can have trashed you can have trashed they can have trashed
V-ing perfect
I can have been trashing you can have been trashing he can have been trashing we can have been trashing you can have been trashing they can have been trashing
Negation
Simple form
I can't trash you can't trash he can't trash we can't trash you can't trash they can't trash
V-ing form
I can't be trashing you can't be trashing he can't be trashing we can't be trashing you can't be trashing they can't be trashing
Perfect
I can't have trashed you can't have trashed he can't have trashed we can't have trashed you can't have trashed they can't have trashed
V-ing perfect
I can't have been trashing you can't have been trashing he can't have been trashing we can't have been trashing you can't have been trashing they can't have been trashing
Interrogative form
Simple form
can I trash? can you trash? can he trash? can we trash? can you trash? can they trash?
V-ing form
can I be trashing? can you be trashing? can he be trashing? can we be trashing? can you be trashing? can they be trashing?
Perfect
can I have trashed? can you have trashed? can he have trashed? can we have trashed? can you have trashed? can they have trashed?
V-ing perfect
can I have been trashing? can you have been trashing? can he have been trashing? can we have been trashing? can you have been trashing? can they have been trashing?
Interro-negative form
Simple form
can't I trash? can't you trash? can't he trash? can't we trash? can't you trash? can't they trash?
V-ing form
can't I be trashing? can't you be trashing? can't he be trashing? can't we be trashing? can't you be trashing? can't they be trashing?
Perfect
can't I have trashed? can't you have trashed? can't he have trashed? can't we have trashed? can't you have trashed? can't they have trashed?
V-ing perfect
can't I have been trashing? can't you have been trashing? can't he have been trashing? can't we have been trashing? can't you have been trashing? can't they have been trashing?