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

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

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

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

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