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

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

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

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

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