Extend St Alphage Bob Doubles

EP4 Dual Mode Constraints

EP4 Dual Mode Derivation

  0 1 2 3 4 5 6 7 8 9
1. St Alphage Bob Doubles 1 3 1 125 3 145
2. Extract places above the hunt bell - 3 - 5 - -
3. Extract places below the hunt bell - - 1 12 3 14
Expand places above the hunt bell F E D C B A
4. Reverse and invert places from [2] - - 1 - 3 -
5. Separate into two overlapping strips - - 1 - 3
6. Using the start change and overlap - 1 - 3 -
7. Expand places above mode in [6] to next stage - 1 - 3 -
8. Connect the static [5] and expanded [7] strip - - 1 - 3 - 1 - 3 -
9. Reverse and invert places in [8] back again - 7 - 9 - 7 - 9 - -
Expand places below the hunt bell A B C D E F
10. Below places from [3] - - 1 12 3 14
11. Separate into two overlapping strips - - 1
12. Using the start change and overlap - 1 12 3 14
13. Expand places above mode in [12] to next stage - 1 - 1 12 7 18
14. Connect the static [11] and the expanded [13] strip - - 1 - 1 - 1 12 7 18
Recombine above and below places A B C D E F G H I J
15. Above places from [9] - 7 - 9 - 7 - 9 - -
16. Below places from [14] - - 1 - 1 - 1 12 7 18
17. Default hunt bell places 1 - - - - - - - - 9
18. [Unnamed] Differential Bob Caters 1 7 1 9 1 7 1 129 7 189

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

13452 St Alphage Bob Doubles 3.1.125.3.145,1
198567432 [Unnamed] Differential Bob Caters 7.1.9.1.7.1.129.7.189,1
19A574T30E826 [Unnamed] Bob Sextuples E.1.A.1.E.1.A.1.E.1.12A.E.1TA,1
Doubles Caters Sextuples
St Alphage Bob Doubles [Unnamed] Differential Bob Caters [Unnamed] Bob Sextuples