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

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

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

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

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