1 x 5 x 8 (66)
This 1x5x8 uses two 1x4x5's (one with the 1x3x3 within). It can be done also using the 1x3x4.
1 x 5 x 9 White Corners(9)
1 x 5 x 9 Black Corners (6)
The 1x5x9 has the similar feature as the 1x5x5 and 1x5x7 in that it can be done using all white corners or all black corners. Both are equally hard since there are no sub shapes used which may offer a clue when trying this shape.
1 x 5x 10 (10)
I could find only a single 1x5x10 with a sub shape being used (that of the 1x3x4).
