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Please explain using only enolisation and protonation steps:

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My workings so far:

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Seems completely wrong... Can someone please correct me?

*i just proposed a new mechanism:

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After Step 2, re-protonate alpha to the carbonyl (the double bond has now migrated to the beta-gamma position). Now enolize the carbonyl - remove the proton next to the methyl group (the top one), then push the electrons all the way back, protonating the gamma position. Job done!

Mechanism

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