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Spirit20
system, Alt, Info
CornflowerBlue
20x20
system, question
system, question, Alt
system, Info
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Network & communications
Pixel
16x16 Free Application Icons
system, tools, Desktop
16x16
Files & folders
Smooth
question, system
UI
3D
Gnome Web Icons
preferences, system, network
32x32
Gnome, network, system
48x48