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

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

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

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

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