C111123313331323113313331333133313331122112312111133133313331333132313232211331   >>    C11112331333132311331333133313331333112211231211113313331333133313231323221133   <<    C111123313331323113313331333133313331122112312111133133313331333132313232211333   >>      C111123313331323113313331333133313331122112312111133133313331333132313232211332   >>