1.12 diamond trail command

1.12 or 1.11 diamond trail command       summon falling_block ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:falling_block,Block:redstone_block,Time:1,Passengers:[{id:falling_block,Block:activator_rail,Time:1,Passengers:[{id:commandblock_minecart,Command:"gamerule commandBlockOutput false"},{id:commandblock_minecart,Command:"fill ~2 ~-3 ~-1 ~5 ~-1 ~1 stained_hardened_clay 14 hollow"},{id:commandblock_minecart,Command:"fill ~2 ~-2 ~-1 ~5 ~-2 ~1 stained_glass 15 0 stained_hardened_clay"},{id:commandblock_minecart,Command:"fill ~3 ~-2 ~ ~4 ~-2 ~ chain_command_block 5"},{id:commandblock_minecart,Command:"setblock ~3 ~-2 ~ repeating_command_block 5"},{id:commandblock_minecart,Command:"blockdata ~4 ~-2 ~ {auto:1,Command:\"/clear @p \"}"},{id:commandblock_minecart,Command:"blockdata ~3 ~-2 ~ {auto:1,Command:\"/give @p diamond\"}"},{id:commandblock_minecart,Command:"setblock ~ ~ ~1 command_block 0 0 {Command:\"fill ~ ~-3 ~-1 ~ ~ ~ air\"}"},{id:commandblock_minecart,Command:"setblock ~ ~-1 ~1 redstone_block"},{id:commandblock_minecart,Command:"kill @e[type=commandblock_minecart,r=1]"}]}]}]}