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

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

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

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

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