well I have gone back to my old methods.
Its based on Form.
I have no idea what your methods are based on.

SHEPPARTON Race 5

2 KID CONDOR $5.7
4 ALANA BALE $5.9
1 TERRY'S DELIGHT $6.1
5 GREYSYND ROSE $6.2
6 MAGIC RUBBLE $7.5
8 FOOSE $8.5
3 DOT MAN $16
7 LEKTRA GOLD $50

2,4,1 - 2,4,1,5,6 - 2,4,1,5,6,8 - 2,4,1,5,6,8,3 for $6 worth
leaving out the bottom animal - might even leave out the next bottom , but that is tempting fate that little bit too much