(0 18 2)(1 5 3)(4 9 7)(6 12 11)(8 17 15)(10 20 13)(14 19 16)
ALLOWS (11/8)-SEQUENCE
1: (8 12 15)
(0 18 2)(1 5 3)(4 9 7)(6 12 17 15 11)(8)(10 20 13)(14 19 16)
2: (6 12 17)
(0 18 2)(1 5 3)(4 9 7)(6 15 11)(8)(10 20 13)(12)(14 19 16)(17)
3: (4 9 7)
(0 18 2)(1 5 3)(4)(6 15 11)(7)(8)(9)(10 20 13)(12)(14 19 16)(17)
4: (14 19 16)
(0 18 2)(1 5 3)(4)(6 15 11)(7)(8)(9)(10 20 13)(12)(14)(16)(17)(19)