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

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

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

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

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