Rummikub Tile Holder

These files are for tile holders for the game Rummikub. The ones that come with the game have three rows and I wanted more. I kept saying "I could 3D print a better one" so I did. And as someone else pointed out, the tiles fell out easily. They don't fall out with this holder!

I have a Creality CR-10 so I made them big, but hoping for 'small enough' to fit in the game box. They may be too large for smaller printers, and the earlier versions won't fit in the game box. My main width dimension is 245mm, but the ones with slanted sides go up to about 260mm.

Description:
V2 has straight sides but no cut-out for stacking, and protruding backrests. Only 4 rows.
V3 has slanted sides but no cut-out for stacking, and protruding backrests. Up to 5 rows now.
V4 has slanted sides, a cut-out for stacking, but no backrests.
V5 is like V4 but not as much space between rows. This is so you might fit two (or four) in the box.