(0 15 1)(2 20 18)(3 21 17 10 5)(4 14 12 9 6)(7 11 8)(13 19 16)
ALLOWS (11/8)-SEQUENCE
1: (0 2 20)

(0 18 2 15 1)(3 21 17 10 5)(4 14 12 9 6)(7 11 8)(13 19 16)(20)
2: (1 2 15)

(0 18 2)(1)(3 21 17 10 5)(4 14 12 9 6)(7 11 8)(13 19 16)(15)(20)
3: (10 21 17)

(0 18 2)(1)(3 21 5)(4 14 12 9 6)(7 11 8)(10)(13 19 16)(15)(17)(20)
4: (13 19 16)

(0 18 2)(1)(3 21 5)(4 14 12 9 6)(7 11 8)(10)(13)(15)(16)(17)(19)(20)