C11111211113313112113313331333133313331333132212111133133313331333133311321111   >>    C1111121111331311211331333133313331333133313221211113313331333133313331132111   <<    C11111211113313112113313331333133313331333132212111133133313331333133311321113   >>      C11111211113313112113313331333133313331333132212111133133313331333133311321112   >>