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

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

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

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

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