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

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

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

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

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