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David Tichansky's profile was updated 3 months, 3 weeks ago
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David Tichansky's profile was updated 3 years, 4 months ago
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David Tichansky earned the badge: FUSE exam 6 years ago
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David Tichansky's profile was updated 6 years, 2 months ago
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David Tichansky earned the badge: FLS exam 8 years, 5 months ago
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