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

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

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

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

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