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