Findings:

• alternating permutation
• permutation
• pseudo-random permutation
• Permutation cipher
• Permutations with no fixpoints
• Puncture
• permutation group
• even permutation
• lumbar puncture
• fixed points of permutations
• Repairing punctures on your bike tyres
• the average number of fixed points of a permutation is 1
• puncture repair kit
• Permutation City
• puncture-proof tire
• Even permutations are not odd
• permutation matrix

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