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

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

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

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

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