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