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 can't shun you can't shun he can't shun we can't shun you can't shun they can't shun
V-ing form
I can't be shunning you can't be shunning he can't be shunning we can't be shunning you can't be shunning they can't be shunning
Perfect
I can't have shunned you can't have shunned he can't have shunned we can't have shunned you can't have shunned they can't have shunned
V-ing perfect
I can't have been shunning you can't have been shunning he can't have been shunning we can't have been shunning you can't have been shunning they can't 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't I shun? can't you shun? can't he shun? can't we shun? can't you shun? can't they shun?
V-ing form
can't I be shunning? can't you be shunning? can't he be shunning? can't we be shunning? can't you be shunning? can't they be shunning?
Perfect
can't I have shunned? can't you have shunned? can't he have shunned? can't we have shunned? can't you have shunned? can't they have shunned?
V-ing perfect
can't I have been shunning? can't you have been shunning? can't he have been shunning? can't we have been shunning? can't you have been shunning? can't they have been shunning?