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