C111112111133131121133133313331323133313221131211113313113313332213112211   >>    C11111211113313112113313331333132313331322113121111331311331333221311221   <<    C111112111133131121133133313331323133313221131211113313113313332213112213   >>      C111112111133131121133133313331323133313221131211113313113313332213112212   >>