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Education
Flat
Study
education, Grade, test
Black
512x512
Interface
Material Design
exclamation mark, Bubble speech, failed
Computer
WebDev SEO
Wrench, fail, interface
shapes
fail, failed, mark
Signs
Education Lite
fail, marks, signs
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Crystal Clear Actions
wrong, Alert, no access
256x256
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Education & science
Outline
Miscellaneous
disagree, failure, fail
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Computer & hardware
Smooth
Crystal Project
agt, Action, fail