Result: 6× Mossy Stone Brick Wall
Mossy Stone Brick Wall is a shaped crafting recipe that uses 6 items: 6 Mossy Stone Bricks. Place the ingredients exactly in the pattern shown above. The pattern can sit anywhere on the grid as long as its shape stays the same. It needs the full 3×3 grid, so you have to use a crafting table.
Read the Mossy Stone Brick Wall article in our Minecraft wiki
You need 6 Mossy Stone Bricks — 6 items in total, arranged as shown in the crafting grid. The recipe gives you 6× Mossy Stone Brick Wall.
Yes. The recipe needs the full 3×3 grid, which only a crafting table offers.
It is a shaped recipe: the arrangement matters. You can shift the pattern around the grid, but the shape must stay the same.