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

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

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

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

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