C1111233131211111211113313331333133313331312331333131133133313332223311   >>    C111123313121111121111331333133313331333131233133313113313331333222331   <<    C1111233131211111211113313331333133313331312331333131133133313332223313   >>      C1111233131211111211113313331333133313331312331333131133133313332223312   >>