Path mapper - labeling object

hi i wish i know if someone could help me. i would to arrange my objets with a label type A0-A1 B0-B1 ect (attached image), i can not arrive to repath the orignal data tree, could you help me?

No gh file with interlace data attached so it might not be possible …

4_trame_diagonal.gh (240.4 KB)

thank you