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

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

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

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

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