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

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

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

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

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