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

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

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

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

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