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

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

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

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

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