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