But the brands iPhone and Samsung are kept, even though they are only two options. If the user wants each spintax to have three, then even if it was two, add one. But maybe the user wants all spintax with three already and just swap words? Not sure.

But how do I know which words are brand names? The user didn't provide a list. Maybe brand names are in specific contexts, but without more info, I can't assume. So the safest is to process all spintax placeholders by adding a third word if they have two, and ignore brand names if they are in the text, but how?

In the absence of input, maybe they need an example. Let's create a sample. Suppose the input is "This product is great for Nokia users." The output would already have three options for the second spintax. If the original had only two, add a third. But the user wants each word in the spintax to have three, so if there's a spintax with two options, add one more. However, keeping brand names might mean not to replace them. For example, if the spintax is iPhone, and there's a brand name "Apple" in the text, don't replace it.

This is a bit confusing. Maybe the user just wants an example of generating spintax with three options, keeping brand names as they are. For example, if the input is "I love apple phones", then replace each spintax to have three brands. But the user said "each word with 3 alternatives", so maybe each word in the spintax should have three. But the original question was about swapping in the spintax. Maybe the user wants to generate a text with spintax where each placeholder has three options, and not touch any brand names that are not part of the spintax.

So, to approach this, I need to create a function or a method that takes a string with spintax and replaces each placeholder with three words, ensuring that brand names are preserved. But how to identify brand names? The user didn't specify, so maybe the brand names are already in the text outside the spintax, or perhaps the user expects me to leave any existing brand names untouched when replacing other words. Hmm, this is a bit unclear.