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

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

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

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

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