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

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

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

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

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