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

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

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

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

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