C11111211113313112113313331333133313331333131211113313331321121111133311233131   >>    C1111121111331311211331333133313331333133313121111331333132112111113331123313   <<    C11111211113313112113313331333133313331333131211113313331321121111133311233133   >>      C11111211113313112113313331333133313331333131211113313331321121111133311233132   >>