Lesson 22 Formations

5-1.@ `‚€‚Ώ‚ɁA`: While

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5-2.@ Before something happens (while it's still not `)

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‚P‚Φ–ί‚ι@‚Q‚Φ–ί‚ι@‚R‚Φ–ί‚ι@‚S‚Φ–ί‚ι@@