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

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

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

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

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