01 / 8Practical Engineering≈ approximate level B27:22–7:29 , - -- .
02 / 8Practical Engineering≈ approximate level C15:52–6:01
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03 / 8Practical Engineering≈ approximate level C15:47–5:56
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04 / 8Practical Engineering≈ approximate level C17:00–7:09
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05 / 8CrashCourse≈ approximate level C10:16–0:28
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06 / 8Practical Engineering≈ approximate level C16:03–6:10
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07 / 8Practical Engineering≈ approximate level C16:18–6:25
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08 / 8Kurzgesagt≈ approximate level C15:31–5:42
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