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Business
Flat
Museum
open, sign, Business
YellowGreen
512x512
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Flat icons
Aim, open, Lock
256x256
password, open, Lock
Lock, Connect, open
open, Lock, vertical
Dark Glass
Folder, open, green
128x128
Green Ville
open, Folder
Signs & symbols
Smooth
Super Mono Basic
Book, bookmark, open
48x48
green, open, Basic