C111123313331323113313331333133313331122112312111133131133132313331123133311331   >>    C11112331333132311331333133313331333112211231211113313113313231333112313331133   <<    C111123313331323113313331333133313331122112312111133131133132313331123133311333   >>      C111123313331323113313331333133313331122112312111133131133132313331123133311332   >>