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

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

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

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

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