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Flag icons
red, cross
Gainsboro
64x64
Flags
cross, red
Sketchdock Ecommerce Icons
red, Calendar
24x24
Gnome 2.18 Icon Theme
red, Channel, stock
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Houses
Building, house, Home
128x128
GNOME Desktop
default, red, Application
Flat
2400 flags
Desktop apps
Smooth
Farm-fresh
Adjustment, red, Color
32x32
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UI
Pixel
Calendar, red
3D
Gnome Web Icons
default, Application, 48
48x48
default, Application, 64
Gnome icons
red, Channel
Computer & hardware
Futurosoft
red, google, gmail
Mixed
DRF
mail, red, unread