C1111133313331323223313331333133313331323131211111333131133133313121   >>    C111113331333132322331333133313331333132313121111133313113313331312   <<    C1111133313331323223313331333133313331323131211111333131133133313123   >>      C1111133313331323223313331333133313331323131211111333131133133313122   >>