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

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

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

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

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