How to find duplicates in 3 arrays and place them first in a new array

How To
2

1.

First you want to merge all the arrays, then iterate the items.

Use the built-in function merge

Use an Iterator module.

2.

Next you want to aggregate.

Use an array aggregator.

Group by value

3.

Next you want to aggregate them again

Use an array aggregator.

4.

Finally you can use a set variable module.

You can use the built-in function sort.

Then you can use the built-in function map to get the keys.

Then you can use the built-in function join, if you want to combine them into a single string.

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