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

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

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

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

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