I can ditch you can ditch he can ditch we can ditch you can ditch they can ditch
V-ing form
I can be ditching you can be ditching he can be ditching we can be ditching you can be ditching they can be ditching
Perfect
I can have ditched you can have ditched he can have ditched we can have ditched you can have ditched they can have ditched
V-ing perfect
I can have been ditching you can have been ditching he can have been ditching we can have been ditching you can have been ditching they can have been ditching
Negation
Simple form
I cannot ditch you cannot ditch he cannot ditch we cannot ditch you cannot ditch they cannot ditch
V-ing form
I cannot be ditching you cannot be ditching he cannot be ditching we cannot be ditching you cannot be ditching they cannot be ditching
Perfect
I cannot have ditched you cannot have ditched he cannot have ditched we cannot have ditched you cannot have ditched they cannot have ditched
V-ing perfect
I cannot have been ditching you cannot have been ditching he cannot have been ditching we cannot have been ditching you cannot have been ditching they cannot have been ditching
Interrogative form
Simple form
can I ditch? can you ditch? can he ditch? can we ditch? can you ditch? can they ditch?
V-ing form
can I be ditching? can you be ditching? can he be ditching? can we be ditching? can you be ditching? can they be ditching?
Perfect
can I have ditched? can you have ditched? can he have ditched? can we have ditched? can you have ditched? can they have ditched?
V-ing perfect
can I have been ditching? can you have been ditching? can he have been ditching? can we have been ditching? can you have been ditching? can they have been ditching?
Interro-negative form
Simple form
can I not ditch? can you not ditch? can he not ditch? can we not ditch? can you not ditch? can they not ditch?
V-ing form
can I not be ditching? can you not be ditching? can he not be ditching? can we not be ditching? can you not be ditching? can they not be ditching?
Perfect
can I not have ditched? can you not have ditched? can he not have ditched? can we not have ditched? can you not have ditched? can they not have ditched?
V-ing perfect
can I not have been ditching? can you not have been ditching? can he not have been ditching? can we not have been ditching? can you not have been ditching? can they not have been ditching?