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