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

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

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

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

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