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

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

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

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

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