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