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

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

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

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

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