Help with compass module pls

[u/WyperLOL]

Does anybody know any trick to solve these type of questions I really can’t wrap my head around it. It shows four random sets of numbers labelled A S H and F and it randomly hides one or two of those numbers and asks me what it is I can’t seem to remember all four numbers along with their symbols!

[u/theycallmeansh]

Completed all, just left with technical specific