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

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

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

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

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