C111112111133131121133133313331333131131211113313331323221121221   >>    C11111211113313112113313331333133313113121111331333132322112122   <<    C111112111133131121133133313331333131131211113313331323221121223   >>      C111112111133131121133133313331333131131211113313331323221121222   >>