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

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

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

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

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