setblock ~ ~1 ~ minecraft:mob_spawner 0 replace {
	EntityId:FallingSand,SpawnCount:1,
	SpawnRange:1,
	MinSpawnDelay:40,
	MaxSpawnDelay:40,
	MaxNearbyEntities:32000,
	RequiredPlayerRange:6,
	SpawnData:{
		Pos:[0,-10,0],
		TileID:minecraft:redstone_block},
	SpawnPotentials:[
	{Type:FallingSand,
	Weight:1,
	Properties:{
		Pos:[1324.5,57.0,172.5],
		TileID:minecraft:redstone_block}},
	{Type:FallingSand,
	Weight:1,
	Properties:{
		Pos:[1325.5,57.0,172.5],
		TileID:minecraft:redstone_block}},
	{Type:FallingSand,
	Weight:1,
	Properties:{
		Pos:[1326.5,57.0,172.5],
		TileID:minecraft:redstone_block}
		}
	]
}