Extend Gorakhpur City Halt Bob Major

EP4 Triple Mode Constraints

EP4 Triple Mode Derivation

  0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1. Gorakhpur City Halt Bob Major 12 3456 14 56 123678 1234 58 1256 78
2. Extract places made by the hunt bell 1 - - - - - - - 8
3. Extract places above the hunt bell 2 3456 4 56 678 - 8 - -
4. Extract places below the hunt bell - - 1 - 123 1234 5 1256 7
Expand places above the hunt bell I H G F E D C B A
5. Reverse and invert places from [3] - - 1 - 123 34 5 3456 7
6. Separate into two overlapping strips - - 1 - 123 34 5 3456
7. Using the start change and overlap 1 - 123 34 5 3456 7
8. Expand places above mode in [7] to next stage 1 - 156 67 8 6789 1 - 189 90 E 90ET A
9. Connect the static [6] and expanded [8] strip - - 1 - 123 34 5 3456 1 - 156 67 8 6789 1 - 189 90 E 90ET A
10. Reverse and invert places in [9] back again 2 3456 4 56 67B - B 6789 7 89 90B - B 90ET 0 ET TAB - B - -
Expand places below the hunt bell A B C D E F G H I
11. Below places from [4] - - 1 - 123 1234 5 1256 7
12. Separate into two overlapping strips - - 1 - 123 1234 5 1256 7
13. Using the start change and overlap 1234 5 1256 7
14. Expand places above mode in [13] to next stage 1234 7 1278 9 1234 9 1290 E 1234 E 12ET A
15. Connect the static [12] and the expanded [14] strip - - 1 - 123 1234 5 1256 7 1234 7 1278 9 1234 9 1290 E 1234 E 12ET A
Expand places of the hunt bell A B C D E F G H I
16. Hunt bell places from [2] 1 - - - - - - - 8
17. Separate into two overlapping strips 1 - -
18. Using the start change and overlap - - - - - - - 8
19. Expand places above mode in [18] to next stage - - - - - - - - - - - - - - - - - B
20. Connect the static [17] and the expanded [19] strip 1 - - - - - - - - - - - - - - - - - - - B
Recombine above, below and hunt bell places A B C D E F G G G G G G G G G G G G G G H
21. Above places from [10] 2 3456 4 56 67B - B 6789 7 89 90B - B 90ET 0 ET TAB - B - -
22. Below places from [15] - - 1 - 123 1234 5 1256 7 1234 7 1278 9 1234 9 1290 E 1234 E 12ET A
23. Hunt bell places from [20] 1 - - - - - - B B 5B 8E - - - - - - - - - B
24. [Unnamed] Differential Fourteen 12 3456 14 56 12367B 1234 5B 1256789B 7B 1234589B 7890EB 1278 9B 123490ET 90 1290ET ETAB 1234 EB 12ET AB

Extension and contraction candidates using extension process EP4-6/2:6:1/5:4:4/1:2:1  

13624785 Gorakhpur City Halt Bob Major 3456.14.56.123678.1234.58.1256.78,12
0362485A19BET7 [Unnamed] Differential Fourteen 3456.14.56.12367B.1234.5B.1256789B.7B.1234589B.7890EB.1278.9B.123490ET.90.1290ET.ETAB.1234.EB.12ET.AB,12
Major Fourteen
Gorakhpur City Halt Bob Major [Unnamed] Differential Fourteen