How can divide csv data?

Hi I’m a new Grasshopper user !! I have a single csv file, how can I divide the csv data from row 1 to 8, from 9 to 15 and from 16 to 26? I used the “Partition List” command but without success…Immagine 2021-02-26 171503


Thanks for the reply I was able to solve my first Grasshopper-Tekla flow !! I am attaching my first (23.1 KB)