[r-t] Doubles methods with two hunts and a plain course of 120

[Don Morrison]

On Tue, Sep 21, 2010 at 6:04 AM, Robert Bennett <rbennett at woosh.co.nz> wrote:
> There are some interesting doubles methods where there are two hunts, and
> they (the hunts) cover all possible relative positions  (5 x 4 =20) in each
> lead. If they do this once in each lead the plain course is 60, but if they
> do this twice, the plain lead is 120.
> An example of the shorter sort is:
>
> 5.1.3.5.3.5.3.125.3.5.1.5.3.125.3.5.3.5.3.1 (lead head 12453)

I'm confused. By my reckoning this place notation leads to 35421, not
12453 as claimed:

12345
21435
24153
42135
24315
42351
24531
42513
42153
24135
42315
43251
34521
43512
43152
34125
43215
34251
43521
34512
-----
35421

What am I missing?


-- 
Don Morrison <dfm at ringing.org>
"The bitterest tragic element in life to be derived from an
intellectual source is the belief in a brute Fate or Destiny."
        -- Ralph Waldo Emerson, "Natural History of Intellect"