C111112111133131121133133313331323133313221131211113313232213233311   >>    C11111211113313112113313331333132313331322113121111331323221323331   <<    C111112111133131121133133313331323133313221131211113313232213233313   >>      C111112111133131121133133313331323133313221131211113313232213233312   >>