I can cone you can cone he can cone we can cone you can cone they can cone
V-ing form
I can be coning you can be coning he can be coning we can be coning you can be coning they can be coning
Perfect
I can have coned you can have coned he can have coned we can have coned you can have coned they can have coned
V-ing perfect
I can have been coning you can have been coning he can have been coning we can have been coning you can have been coning they can have been coning
Negation
Simple form
I can't cone you can't cone he can't cone we can't cone you can't cone they can't cone
V-ing form
I can't be coning you can't be coning he can't be coning we can't be coning you can't be coning they can't be coning
Perfect
I can't have coned you can't have coned he can't have coned we can't have coned you can't have coned they can't have coned
V-ing perfect
I can't have been coning you can't have been coning he can't have been coning we can't have been coning you can't have been coning they can't have been coning
Interrogative form
Simple form
can I cone? can you cone? can he cone? can we cone? can you cone? can they cone?
V-ing form
can I be coning? can you be coning? can he be coning? can we be coning? can you be coning? can they be coning?
Perfect
can I have coned? can you have coned? can he have coned? can we have coned? can you have coned? can they have coned?
V-ing perfect
can I have been coning? can you have been coning? can he have been coning? can we have been coning? can you have been coning? can they have been coning?
Interro-negative form
Simple form
can't I cone? can't you cone? can't he cone? can't we cone? can't you cone? can't they cone?
V-ing form
can't I be coning? can't you be coning? can't he be coning? can't we be coning? can't you be coning? can't they be coning?
Perfect
can't I have coned? can't you have coned? can't he have coned? can't we have coned? can't you have coned? can't they have coned?
V-ing perfect
can't I have been coning? can't you have been coning? can't he have been coning? can't we have been coning? can't you have been coning? can't they have been coning?