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

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

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

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

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