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

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

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

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

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