Variant Matrix Generator

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Format: Product, Size, Colour — one per line, matching the names above exactly. Invalid exclusions (values not in your axes) are silently ignored.

SKU format

SKU-{PRODUCT_3CHARS}-{SIZE}-{COLOUR_4CHARS} — e.g. SKU-TSH-S-RED. If two colour names produce the same 4-character code, a numeric suffix is appended (RED1, RED2).