I can choke you can choke she can choke we can choke you can choke they can choke
V-ing form
I can be choking you can be choking she can be choking we can be choking you can be choking they can be choking
Perfect
I can have choked you can have choked she can have choked we can have choked you can have choked they can have choked
V-ing perfect
I can have been choking you can have been choking she can have been choking we can have been choking you can have been choking they can have been choking
Negation
Simple form
I can't choke you can't choke she can't choke we can't choke you can't choke they can't choke
V-ing form
I can't be choking you can't be choking she can't be choking we can't be choking you can't be choking they can't be choking
Perfect
I can't have choked you can't have choked she can't have choked we can't have choked you can't have choked they can't have choked
V-ing perfect
I can't have been choking you can't have been choking she can't have been choking we can't have been choking you can't have been choking they can't have been choking
Interrogative form
Simple form
can I choke? can you choke? can she choke? can we choke? can you choke? can they choke?
V-ing form
can I be choking? can you be choking? can she be choking? can we be choking? can you be choking? can they be choking?
Perfect
can I have choked? can you have choked? can she have choked? can we have choked? can you have choked? can they have choked?
V-ing perfect
can I have been choking? can you have been choking? can she have been choking? can we have been choking? can you have been choking? can they have been choking?
Interro-negative form
Simple form
can't I choke? can't you choke? can't she choke? can't we choke? can't you choke? can't they choke?
V-ing form
can't I be choking? can't you be choking? can't she be choking? can't we be choking? can't you be choking? can't they be choking?
Perfect
can't I have choked? can't you have choked? can't she have choked? can't we have choked? can't you have choked? can't they have choked?
V-ing perfect
can't I have been choking? can't you have been choking? can't she have been choking? can't we have been choking? can't you have been choking? can't they have been choking?