C111123313331323113313331333133313331323112133313331333121111132121   >>    C11112331333132311331333133313331333132311213331333133312111113212   <<    C111123313331323113313331333133313331323112133313331333121111132123   >>      C111123313331323113313331333133313331323112133313331333121111132122   >>