C1111121111331311211331333133313331333133313221211113313331333132313221312121   >>    C111112111133131121133133313331333133313331322121111331333133313231322131212   <<    C1111121111331311211331333133313331333133313221211113313331333132313221312123   >>      C1111121111331311211331333133313331333133313221211113313331333132313221312122   >>