C1111233131211111211113313331333133313232212111133131133133313331122112312311   >>    C111123313121111121111331333133313331323221211113313113313331333112211231231   <<    C1111233131211111211113313331333133313232212111133131133133313331122112312313   >>      C1111233131211111211113313331333133313232212111133131133133313331122112312312   >>