I can resign you can resign he can resign we can resign you can resign they can resign
V-ing form
I can be resigning you can be resigning he can be resigning we can be resigning you can be resigning they can be resigning
Perfect
I can have resigned you can have resigned he can have resigned we can have resigned you can have resigned they can have resigned
V-ing perfect
I can have been resigning you can have been resigning he can have been resigning we can have been resigning you can have been resigning they can have been resigning
Negation
Simple form
I can't resign you can't resign he can't resign we can't resign you can't resign they can't resign
V-ing form
I can't be resigning you can't be resigning he can't be resigning we can't be resigning you can't be resigning they can't be resigning
Perfect
I can't have resigned you can't have resigned he can't have resigned we can't have resigned you can't have resigned they can't have resigned
V-ing perfect
I can't have been resigning you can't have been resigning he can't have been resigning we can't have been resigning you can't have been resigning they can't have been resigning
Interrogative form
Simple form
can I resign? can you resign? can he resign? can we resign? can you resign? can they resign?
V-ing form
can I be resigning? can you be resigning? can he be resigning? can we be resigning? can you be resigning? can they be resigning?
Perfect
can I have resigned? can you have resigned? can he have resigned? can we have resigned? can you have resigned? can they have resigned?
V-ing perfect
can I have been resigning? can you have been resigning? can he have been resigning? can we have been resigning? can you have been resigning? can they have been resigning?
Interro-negative form
Simple form
can't I resign? can't you resign? can't he resign? can't we resign? can't you resign? can't they resign?
V-ing form
can't I be resigning? can't you be resigning? can't he be resigning? can't we be resigning? can't you be resigning? can't they be resigning?
Perfect
can't I have resigned? can't you have resigned? can't he have resigned? can't we have resigned? can't you have resigned? can't they have resigned?
V-ing perfect
can't I have been resigning? can't you have been resigning? can't he have been resigning? can't we have been resigning? can't you have been resigning? can't they have been resigning?