C11111211113313112113313331333133313331333132311233133313331333133311211313111   >>    C1111121111331311211331333133313331333133313231123313331333133313331121131311   <<    C11111211113313112113313331333133313331333132311233133313331333133311211313113   >>      C11111211113313112113313331333133313331333132311233133313331333133311211313112   >>