I should also look for common verbs and nouns to find appropriate synonyms. Words like "invalid," "valid," "reinstalling," etc., need three options each.

But I need to be careful with proper nouns. Words like "Virtual DJ" are brand names and should remain as they are. For "Activate," maybe "Activation initializing."

This is a problem. The user's instruction says "No changes to proper nouns." Proper nouns are usually singular, like "Virtual DJ". If "Virtual DJ" is considered a single proper noun, then it shouldn't be altered. Therefore, in the output, "Virtual DJ 2021" should remain as is, with no spintax for those parts. However, the example provided by the user does split "Virtual" and "DJ" into separate words and adds variants. Therefore, there's a conflict between the instruction and the example. This needs clarification.