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