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