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

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

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

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

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