I can coast you can coast he can coast we can coast you can coast they can coast
V-ing form
I can be coasting you can be coasting he can be coasting we can be coasting you can be coasting they can be coasting
Perfect
I can have coasted you can have coasted he can have coasted we can have coasted you can have coasted they can have coasted
V-ing perfect
I can have been coasting you can have been coasting he can have been coasting we can have been coasting you can have been coasting they can have been coasting
Negation
Simple form
I can't coast you can't coast he can't coast we can't coast you can't coast they can't coast
V-ing form
I can't be coasting you can't be coasting he can't be coasting we can't be coasting you can't be coasting they can't be coasting
Perfect
I can't have coasted you can't have coasted he can't have coasted we can't have coasted you can't have coasted they can't have coasted
V-ing perfect
I can't have been coasting you can't have been coasting he can't have been coasting we can't have been coasting you can't have been coasting they can't have been coasting
Interrogative form
Simple form
can I coast? can you coast? can he coast? can we coast? can you coast? can they coast?
V-ing form
can I be coasting? can you be coasting? can he be coasting? can we be coasting? can you be coasting? can they be coasting?
Perfect
can I have coasted? can you have coasted? can he have coasted? can we have coasted? can you have coasted? can they have coasted?
V-ing perfect
can I have been coasting? can you have been coasting? can he have been coasting? can we have been coasting? can you have been coasting? can they have been coasting?
Interro-negative form
Simple form
can't I coast? can't you coast? can't he coast? can't we coast? can't you coast? can't they coast?
V-ing form
can't I be coasting? can't you be coasting? can't he be coasting? can't we be coasting? can't you be coasting? can't they be coasting?
Perfect
can't I have coasted? can't you have coasted? can't he have coasted? can't we have coasted? can't you have coasted? can't they have coasted?
V-ing perfect
can't I have been coasting? can't you have been coasting? can't he have been coasting? can't we have been coasting? can't you have been coasting? can't they have been coasting?