I can devour you can devour he can devour we can devour you can devour they can devour
V-ing form
I can be devouring you can be devouring he can be devouring we can be devouring you can be devouring they can be devouring
Perfect
I can have devoured you can have devoured he can have devoured we can have devoured you can have devoured they can have devoured
V-ing perfect
I can have been devouring you can have been devouring he can have been devouring we can have been devouring you can have been devouring they can have been devouring
Negation
Simple form
I cannot devour you cannot devour he cannot devour we cannot devour you cannot devour they cannot devour
V-ing form
I cannot be devouring you cannot be devouring he cannot be devouring we cannot be devouring you cannot be devouring they cannot be devouring
Perfect
I cannot have devoured you cannot have devoured he cannot have devoured we cannot have devoured you cannot have devoured they cannot have devoured
V-ing perfect
I cannot have been devouring you cannot have been devouring he cannot have been devouring we cannot have been devouring you cannot have been devouring they cannot have been devouring
Interrogative form
Simple form
can I devour? can you devour? can he devour? can we devour? can you devour? can they devour?
V-ing form
can I be devouring? can you be devouring? can he be devouring? can we be devouring? can you be devouring? can they be devouring?
Perfect
can I have devoured? can you have devoured? can he have devoured? can we have devoured? can you have devoured? can they have devoured?
V-ing perfect
can I have been devouring? can you have been devouring? can he have been devouring? can we have been devouring? can you have been devouring? can they have been devouring?
Interro-negative form
Simple form
can I not devour? can you not devour? can he not devour? can we not devour? can you not devour? can they not devour?
V-ing form
can I not be devouring? can you not be devouring? can he not be devouring? can we not be devouring? can you not be devouring? can they not be devouring?
Perfect
can I not have devoured? can you not have devoured? can he not have devoured? can we not have devoured? can you not have devoured? can they not have devoured?
V-ing perfect
can I not have been devouring? can you not have been devouring? can he not have been devouring? can we not have been devouring? can you not have been devouring? can they not have been devouring?