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

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

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

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

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