(0 18 16)(1 20 8 7 3)(2 6 5)(4 19 17 15 10)(9 13 11)(12 21 14)
ALLOWS (11/8)-SEQUENCE
1: (0 2 16)
(0)(1 20 8 7 3)(2 18 16 6 5)(4 19 17 15 10)(9 13 11)(12 21 14)
2: (1 20 3)
(0)(1)(2 18 16 6 5)(3 8 7)(4 19 17 15 10)(9 13 11)(12 21 14)(20)
3: (2 18 5)
(0)(1)(2)(3 8 7)(4 19 17 15 10)(5 16 6)(9 13 11)(12 21 14)(18)(20)
4: (15 19 17)
(0)(1)(2)(3 8 7)(4 19 10)(5 16 6)(9 13 11)(12 21 14)(15)(17)(18)(20)