Extend Parkhouse Halt Place Minor


EP4 Triple Mode Constraints



EP4 Triple Mode Derivation

  0 1 2 3 4 5 6 7 8 9 10
1. Parkhouse Halt Place Minor 14 56 1456 - 1236 1234 56
2. Extract places made by the hunt bell 1 - - - - - 6
3. Extract places above the hunt bell 4 56 456 - 6 - -
4. Extract places below the hunt bell - - 1 - 123 1234 5
Expand places above the hunt bell G F E D C B A
5. Reverse and invert places from [3] - - 1 - 123 12 3
6. Separate into two overlapping strips - - 1 - 123
7. Using the start change and overlap - 1 - 123 12 3
8. Expand places above mode in [7] to next stage - 1 - 123 12 3
9. Connect the static [6] and expanded [8] strip - - 1 - 123 - 1 - 123 12 3
10. Reverse and invert places in [9] back again 8 90 890 - 0 - 890 - 0 - -
Expand places below the hunt bell A B C D E F G
11. Below places from [4] - - 1 - 123 1234 5
12. Separate into two overlapping strips - - 1 - 123 1234
13. Using the start change and overlap 123 1234 5
14. Expand places above mode in [13] to next stage 125 1256 127 1278 9
15. Connect the static [12] and the expanded [14] strip - - 1 - 123 1234 125 1256 127 1278 9
Expand places of the hunt bell A B C D E F G
16. Hunt bell places from [2] 1 - - - - - 6
17. Separate into two overlapping strips 1 - -
18. Using the start change and overlap - - - - - 6
19. Expand places above mode in [18] to next stage - - - - - - - 0
20. Connect the static [17] and the expanded [19] strip 1 - - - - - - - - - 0
Recombine above, below and hunt bell places A B C D E F G H I J K
21. Above places from [10] 8 90 890 - 0 - 890 - 0 - -
22. Below places from [15] - - 1 - 123 1234 125 1256 127 1278 9
23. Hunt bell places from [20] 1 - - - - - - - - - 0
24. [Unnamed] Differential Bob Royal 18 90 1890 - 1230 1234 125890 1256 1270 1278 90

Extension and contraction candidates using extension process EP4-4/1:4:3/4:2:2/1:2:1  

164235 Parkhouse Halt Place Minor 56.1456-1236.1234.56,14
1543208679 [Unnamed] Differential Bob Royal 90.1890-1230.1234.125890.1256.1270.1278.90,18
154329876BT0EA [Unnamed] Differential Bob Fourteen AB.1TAB-123B.1234.125TAB.1256.127B.1278.129TAB.1290.12EB.12ET.AB,1T
Minor Royal Fourteen
Parkhouse Halt Place Minor [Unnamed] Differential Bob Royal [Unnamed] Differential Bob Fourteen