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Compare three lists at once and find values present in all lists, multiple lists, only once, or the full unique union.
About this tool
Two-list comparison is not enough when you are reconciling three exports, teams, inventories, or survey groups. This tool builds a frequency map across all three inputs.
Switch the result mode to isolate the exact overlap pattern you need, then copy one clean line-by-line output.
FAQ
No. Each input is deduplicated before cross-list membership is calculated.
This first version supports three inputs. Additional-list support is planned in the next comparison expansion.
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