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

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

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

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

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