C31231211111133131211113313331333132233133313331333132233132313111221   >>    C3123121111113313121111331333133313223313331333133313223313231311122   <<    C31231211111133131211113313331333132233133313331333132233132313111223   >>      C31231211111133131211113313331333132233133313331333132233132313111222   >>