Marcus (Latin) Mark (English) Marco (Italian) Marcos (Spanish)

Maybe the user is referring to the name "Marcos" which in Spanish has other variations. For example, Marcos could be Marcos, Marco, or Marce. But the user said to leave names unchanged, so the variants should be existing names. The similar names listed are Marcus, Mark, Marco, Marcos. So for each, create a c set with three of those names. But there are four, so maybe each name is part of a set with three others. For example:

Given the similar names listed are Marcus, Mark, Marco, and Marcos. So for each name in that list, create a a set with three of these names. Since Marcos is one of them, maybe:

Marcus -> Marco

The text lists Marcos (Spanish) and similar names include Marcus (Latin), Mark (English), Marco (Italian), Marcos (Spanish). The conclusion talks about Marcelo. So, the user wants each name in the similar list to have three variants in the b format. But the existing names listed are variations of Marcelo—Marcus is the Latin origin, Mark is the English, Marco as Italian. Wait, Marcos is the Spanish. But how to get three variants for each? The original text gives only two for Marcos perhaps? Or are there three similar names for each? The user might want each name (Marcos, Marcus, Mark, Marco) replaced with a list of three possible variations in the b format. But the instruction says "convert every term with 3 variants in b format. Leave names unchanged. Result only."