If i have a list with a bout 2000 index or element"Pipe" ( that indexes is related to 5 groups of sizes ) as shown in attached photo
my question is if there is a " node " that can give me a list with only that 5 groups
in attached photo : you can find
1- “WRP” is repeated 1000 times
2- “DCWS” is repeated 300 times
3- "RPL " is repeated 300 times
4- "RPG " is repeated 300 times
5- "CD " is repeated 100 times
i need only a list with ( WRP , DCWS , RPL , RPG , CD ) Without any repetition