C3132121111331312113313331333133313331322121133133313221123233231   >>    C313212111133131211331333133313331333132212113313331322112323323   <<    C3132121111331312113313331333133313331322121133133313221123233233   >>      C3132121111331312113313331333133313331322121133133313221123233232   >>