C111123313331323113313331333133313331323112133313331313331313231211   >>    C11112331333132311331333133313331333132311213331333131333131323121   <<    C111123313331323113313331333133313331323112133313331313331313231213   >>      C111123313331323113313331333133313331323112133313331313331313231212   >>