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cryptic
11A Wimp takes advantage of operation (7) M ? L ? S ? ? 27A Right to leave unwanted dogs remains (5) ? ? ? ? ?
9D Dad returned and concealed garden pest (5) ? ? ? I ?
15D Orange bear to raise inside (7) C ? R ? O ? ?
19D Registered to improve river (5) ? H ? N ?
22D Avoid bit of comedy having initially rude content (5) S ? I ? ?