explain 튜브 (643) 6

7 mins 12 secs

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59 secs

12 mins 34 secs

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11 mins 59 secs

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55 secs

1 min 4 secs

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12 mins

6 mins 16 secs

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1 min 42 secs

6 mins 15 secs

17 mins 41 secs

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34 secs