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