I can shun you can shun he can shun we can shun you can shun they can shun
V-ing form
I can be shunning you can be shunning he can be shunning we can be shunning you can be shunning they can be shunning
Perfect
I can have shunned you can have shunned he can have shunned we can have shunned you can have shunned they can have shunned
V-ing perfect
I can have been shunning you can have been shunning he can have been shunning we can have been shunning you can have been shunning they can have been shunning
Negation
Simple form
I cannot shun you cannot shun he cannot shun we cannot shun you cannot shun they cannot shun
V-ing form
I cannot be shunning you cannot be shunning he cannot be shunning we cannot be shunning you cannot be shunning they cannot be shunning
Perfect
I cannot have shunned you cannot have shunned he cannot have shunned we cannot have shunned you cannot have shunned they cannot have shunned
V-ing perfect
I cannot have been shunning you cannot have been shunning he cannot have been shunning we cannot have been shunning you cannot have been shunning they cannot have been shunning
Interrogative form
Simple form
can I shun? can you shun? can he shun? can we shun? can you shun? can they shun?
V-ing form
can I be shunning? can you be shunning? can he be shunning? can we be shunning? can you be shunning? can they be shunning?
Perfect
can I have shunned? can you have shunned? can he have shunned? can we have shunned? can you have shunned? can they have shunned?
V-ing perfect
can I have been shunning? can you have been shunning? can he have been shunning? can we have been shunning? can you have been shunning? can they have been shunning?
Interro-negative form
Simple form
can I not shun? can you not shun? can he not shun? can we not shun? can you not shun? can they not shun?
V-ing form
can I not be shunning? can you not be shunning? can he not be shunning? can we not be shunning? can you not be shunning? can they not be shunning?
Perfect
can I not have shunned? can you not have shunned? can he not have shunned? can we not have shunned? can you not have shunned? can they not have shunned?
V-ing perfect
can I not have been shunning? can you not have been shunning? can he not have been shunning? can we not have been shunning? can you not have been shunning? can they not have been shunning?