Danish to English Bus/Financial Business/Commerce (general) Statement of wages (lønafregning)

On a statement of wages (lønafregning), it says:

ATP-BIDRAG LØN 31,60
A-SKAT I ALT 3.526,00
OPTJ FEDG SIDS ÅR 2,08
NETTO FP SIDS ÅR 4.125,65
NETTO SH SIDS ÅR 9.438,12

Does anyone know what this FP and SH means???

I am stating the amounts to help for context as the size of the amounts might be helpful here?

Thanks!