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