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

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

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

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

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