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