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