replaceitem entity @s slot.hotbar 0 barrier
replaceitem entity @s slot.hotbar 1 concretepowder 1 8
replaceitem entity @s slot.hotbar 2 concretepowder 1 9
replaceitem entity @s slot.hotbar 3 concretepowder 1 10
replaceitem entity @s slot.hotbar 4 concretepowder 1 11
replaceitem entity @s slot.hotbar 5 concretepowder 1 12
replaceitem entity @s slot.hotbar 6 concretepowder 1 13
replaceitem entity @s slot.hotbar 7 concretepowder 1 14
replaceitem entity @s slot.hotbar 8 concretepowder 1 15

