C11111211113313112113313331333133313331333132313331333133313113313133311211   >>    C1111121111331311211331333133313331333133313231333133313331311331313331121   <<    C11111211113313112113313331333133313331333132313331333133313113313133311213   >>      C11111211113313112113313331333133313331333132313331333133313113313133311212   >>