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

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

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

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

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