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

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

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

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

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