C11111333133313232233133313331333131133131211111323132313123121   >>    C1111133313331323223313331333133313113313121111132313231312312   <<    C11111333133313232233133313331333131133131211111323132313123123   >>      C11111333133313232233133313331333131133131211111323132313123122   >>