C11111211113313112113313331333132313331322113121111331311331333133311213112211   >>    C1111121111331311211331333133313231333132211312111133131133133313331121311221   <<    C11111211113313112113313331333132313331322113121111331311331333133311213112213   >>      C11111211113313112113313331333132313331322113121111331311331333133311213112212   >>