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

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

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

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

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