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

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

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

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

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