Hi Shaun!
If I may butt in. I have actually ran yur idea over 4 years of results. About 63000 races. I went further and included 116,115, 220 etc upto 660-661/ Here are the results. But I would not take it for gospel because despite the number of races I looked at, the form patterns being so unique there are not a lot of races where they apply.
first column = form pattern
sec = num of races where the pattern applies
third = num of wins
fourth = $return
fifth = num of places
sixth = $return on place
Form Num Win $Ret Plc $Ret
110 284 32 170.0 92 224.90
119 125 16 115.5 49 123.79
118 157 13 79.9 44 103.00
117 167 22 216.6 58 184.29
116 268 38 299.4 93 228.80
115 281 40 227.5 101 244.10
114 334 44 190.1 122 271.49
113 445 84 368.2 223 408.59
112 596 118 522.4 308 538.09
111 792 235 931.5 440 784.40
220 229 22 145.8 69 178.00
229 84 6 32.9 30 64.60
228 147 23 152.0 51 124.39
227 212 27 181.4 74 161.99
226 224 30 158.9 95 204.29
225 298 45 227.2 125 258.29
224 393 75 338.7 160 297.69
223 472 85 408.2 260 480.10
222 625 120 527.5 341 613.29
221 751 171 815.3 349 663.19
330 221 21 176.5 62 179.69
339 114 9 75.0 35 96.90
338 144 10 80.5 44 112.49
337 156 14 84.1 48 121.60
336 189 17 140.5 66 157.50
335 247 28 188.5 81 227.79
334 315 41 263.4 111 259.69
333 347 44 230.5 167 379.20
332 438 62 314.3 209 418.09
331 464 102 569.5 214 445.10
440 180 10 117.0 51 223.30
444 236 30 184.9 88 214.10
448 129 8 81.5 41 115.10
447 146 15 128.4 44 126.50
446 157 12 70.4 43 150.90
445 205 24 242.3 58 149.50
443 287 35 221.8 113 253.60
442 331 40 199.2 154 314.79
441 326 59 340.1 128 282.49
550 142 6 80.6 25 89.60
559 94 6 92.3 20 67.90
558 103 10 129.2 29 111.30
557 109 9 112.4 28 87.20
556 156 12 168.6 44 151.70
555 187 12 94.5 47 137.99
554 223 20 170.0 67 172.00
553 184 20 190.5 60 163.69
552 237 34 228.2 105 254.20
551 222 40 291.8 79 186.00
660 165 11 82.9 24 89.50
669 70 6 140.9 17 68.10
668 93 13 179.8 33 128.80
667 107 8 67.5 22 87.50
666 122 12 126.4 41 176.60
665 152 12 124.9 42 155.70
664 174 13 96.3 51 146.80
663 186 22 138.7 89 228.19
662 151 20 183.6 58 135.19
661 149 25 205.9 53 139.49