(0 19 17 15 2)(1 5 3)(4 12 10)(6 14 9)(7 16 13 11 8)(18 21 20)
ALLOWS (11/8)-SEQUENCE
1: (1 7 16)

(0 19 17 15 2)(1 13 11 8 7 5 3)(4 12 10)(6 14 9)(16)(18 21 20)
2: (2 17 15)

(0 19 17)(1 13 11 8 7 5 3)(2)(4 12 10)(6 14 9)(15)(16)(18 21 20)
3: (1 13 3)

(0 19 17)(1)(2)(3 11 8 7 5)(4 12 10)(6 14 9)(13)(15)(16)(18 21 20)
4: (6 14 9)

(0 19 17)(1)(2)(3 11 8 7 5)(4 12 10)(6)(9)(13)(14)(15)(16)(18 21 20)