{"id":"keyboard-row-no-input-validation","text":"Non-alphabetic characters in input words cause an unhandled `KeyError` from the `row_map` lookup; the function trusts the LeetCode constraint of alpha-only input.","truth_value":"IN","source":"entries/2026/06/06/keyboard-row-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"keyboard-row-no-input-validation","truth_value":"IN","reason":"premise"}]}}