C111123313331323113313331333133313331323323113313331333112113313133121   >>    C11112331333132311331333133313331333132332311331333133311211331313312   <<    C111123313331323113313331333133313331323323113313331333112113313133123   >>      C111123313331323113313331333133313331323323113313331333112113313133122   >>