test

/summon minecraft:falling_block ~ ~10 ~ {Block:stone,Time:1,Passengers:[{id:"falling_block",Time:1,Block:chain_command_block,TileEntityData:{Command:"/fill ~ ~-1 ~ ~ ~4 ~ air"},Passengers:[{id:"falling_block",Time:1,Block:chain_command_block,TileEntityData:{Command:"/fill ~1 ~-2 ~1 ~7 ~-2 ~-1 stone"},Passengers:[{id:"falling_block",Time:1,Block:chain_command_block,TileEntityData:{Command:"/fill ~1 ~-2 ~-1 ~1 ~4 ~-1 glass"},Passengers:[{id:"falling_block",Time:1,Block:command_block,TileEntityData:{Command:"/fill ~1 ~-2 ~1 ~1 ~4 ~1 glass"},Passengers:[{id:"falling_block",Time:1,Block:redstone_block}]}]}]}]}]}