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

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

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

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

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