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

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

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

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

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