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

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

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

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

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