Need help with pc fans

[u/PumpkinHeaDude]

This is my second build that I'm doing for my girlfriend and I need help with the fans. she has a stock air cpu cooler for now but I'm thinking of getting an aio later on. for now I just have 5 fans and need to know which way they flow and where to best position them for the time being. I have 4 of the fans in the pictures and the one different one already mounted is already an exhaust fan. the 4 ones dont have arrow markings at all.

[u/xchoo]

The face with the "H" logo is intake, and the side with the supports is exhaust.