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

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

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

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

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