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

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

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

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

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