ZigZag pattern as new Column for ID

This can be done with a DAX measure but you will need 2 extra things in your data:

1. A date column that indicates when the entry was made
2. A record for the first version of the "Op".

Here is the datatable i made which i just called "Data"

Here is the measure:

Pattern = CONCATENATEX(Data, Data[CurrentOp], " -> ", Data[Date], ASC )

Here is the output in a table visual: