Help I can't figure out the pattern to open the desk in room 805. Hope level.?

To open the desk draw you need to find 4 pieces of paper. If you haven't found all 4 then check the guide for the locations.

https://www.appgamer.com/spotlight-room-escape/strategy-guide/hope-room-2

each piece shows the pattern for 1 of the 4 blocks. You need to get them in the right order. The greyed boxed on the paper are the ones that need to be switched on. Again the guide will help.