- 18732 1600x900 system, shutdown, sign
- 22196 1600x900 system, blue, device
- 15736 1600x900 system, device, glass
- 22811 1600x900 system, scheme, blue
- 13191 1600x900 system, form, shape
- 11089 1600x900 system, face, pink
- 12893 1600x900 system, mechanism, device
- 16265 1600x900 system, form, shape
- 21790 1600x900 fail, system, code
- 15483 1600x900 lock, system, words
- 38782 1600x900 mechanism, system, gears
- 24699 1600x900 ubuntu, system, multi-colored
- 32598 1600x900 grid, system, green
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