I can ambulate you can ambulate he can ambulate we can ambulate you can ambulate they can ambulate
V-ing form
I can be ambulating you can be ambulating he can be ambulating we can be ambulating you can be ambulating they can be ambulating
Perfect
I can have ambulated you can have ambulated he can have ambulated we can have ambulated you can have ambulated they can have ambulated
V-ing perfect
I can have been ambulating you can have been ambulating he can have been ambulating we can have been ambulating you can have been ambulating they can have been ambulating
Negation
Simple form
I cannot ambulate you cannot ambulate he cannot ambulate we cannot ambulate you cannot ambulate they cannot ambulate
V-ing form
I cannot be ambulating you cannot be ambulating he cannot be ambulating we cannot be ambulating you cannot be ambulating they cannot be ambulating
Perfect
I cannot have ambulated you cannot have ambulated he cannot have ambulated we cannot have ambulated you cannot have ambulated they cannot have ambulated
V-ing perfect
I cannot have been ambulating you cannot have been ambulating he cannot have been ambulating we cannot have been ambulating you cannot have been ambulating they cannot have been ambulating
Interrogative form
Simple form
can I ambulate? can you ambulate? can he ambulate? can we ambulate? can you ambulate? can they ambulate?
V-ing form
can I be ambulating? can you be ambulating? can he be ambulating? can we be ambulating? can you be ambulating? can they be ambulating?
Perfect
can I have ambulated? can you have ambulated? can he have ambulated? can we have ambulated? can you have ambulated? can they have ambulated?
V-ing perfect
can I have been ambulating? can you have been ambulating? can he have been ambulating? can we have been ambulating? can you have been ambulating? can they have been ambulating?
Interro-negative form
Simple form
can I not ambulate? can you not ambulate? can he not ambulate? can we not ambulate? can you not ambulate? can they not ambulate?
V-ing form
can I not be ambulating? can you not be ambulating? can he not be ambulating? can we not be ambulating? can you not be ambulating? can they not be ambulating?
Perfect
can I not have ambulated? can you not have ambulated? can he not have ambulated? can we not have ambulated? can you not have ambulated? can they not have ambulated?
V-ing perfect
can I not have been ambulating? can you not have been ambulating? can he not have been ambulating? can we not have been ambulating? can you not have been ambulating? can they not have been ambulating?