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

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

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

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

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