C111123313331323113313331333133313331122112312111112111113233232331   >>    C11112331333132311331333133313331333112211231211111211111323323233   <<    C111123313331323113313331333133313331122112312111112111113233232333   >>      C111123313331323113313331333133313331122112312111112111113233232332   >>