I can succeed you can succeed he can succeed we can succeed you can succeed they can succeed
V-ing form
I can be succeeding you can be succeeding he can be succeeding we can be succeeding you can be succeeding they can be succeeding
Perfect
I can have succeeded you can have succeeded he can have succeeded we can have succeeded you can have succeeded they can have succeeded
V-ing perfect
I can have been succeeding you can have been succeeding he can have been succeeding we can have been succeeding you can have been succeeding they can have been succeeding
Negation
Simple form
I cannot succeed you cannot succeed he cannot succeed we cannot succeed you cannot succeed they cannot succeed
V-ing form
I cannot be succeeding you cannot be succeeding he cannot be succeeding we cannot be succeeding you cannot be succeeding they cannot be succeeding
Perfect
I cannot have succeeded you cannot have succeeded he cannot have succeeded we cannot have succeeded you cannot have succeeded they cannot have succeeded
V-ing perfect
I cannot have been succeeding you cannot have been succeeding he cannot have been succeeding we cannot have been succeeding you cannot have been succeeding they cannot have been succeeding
Interrogative form
Simple form
can I succeed? can you succeed? can he succeed? can we succeed? can you succeed? can they succeed?
V-ing form
can I be succeeding? can you be succeeding? can he be succeeding? can we be succeeding? can you be succeeding? can they be succeeding?
Perfect
can I have succeeded? can you have succeeded? can he have succeeded? can we have succeeded? can you have succeeded? can they have succeeded?
V-ing perfect
can I have been succeeding? can you have been succeeding? can he have been succeeding? can we have been succeeding? can you have been succeeding? can they have been succeeding?
Interro-negative form
Simple form
can I not succeed? can you not succeed? can he not succeed? can we not succeed? can you not succeed? can they not succeed?
V-ing form
can I not be succeeding? can you not be succeeding? can he not be succeeding? can we not be succeeding? can you not be succeeding? can they not be succeeding?
Perfect
can I not have succeeded? can you not have succeeded? can he not have succeeded? can we not have succeeded? can you not have succeeded? can they not have succeeded?
V-ing perfect
can I not have been succeeding? can you not have been succeeding? can he not have been succeeding? can we not have been succeeding? can you not have been succeeding? can they not have been succeeding?