When I was playing with the "setblock" command, in a command block, I found that if you tell it to place a block at a certain coordinates that it will place them at the same coordinates, but by adding 2 to the x and z of the coordinates.
How to replicate:
1. Give yourself a command block (optional)
2. Type in "/setblock -1084 55 -888 minecraft:redstone_block"
3. Notice that it places the block at -1086 55 -890

If that is hard to understand just pay attention to the x y x of the command and the current position in the pictures.