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

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

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

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

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