But in the user's example, y is split into three lines, so if those are non-proper nouns, that's fine. The challenge is determining which terms are proper nouns. However, without context, it's hard to know. The user's instruction is to "Don't touch proper nouns," so any spintax group that contains proper nouns should remain as they are, not split. But how can I identify proper nouns in the spintax terms? For example, if the group is Italy, these are all countries (proper nouns), so leave them as is. If the group is dog, these are common nouns, so split them into three lines.
Wait, the example in the user's initial query shows that for z, the spin results in three lines. So perhaps the user wants each spintax group to be split into its own line with each variant. For example, if the original text is "The cat sat on the sofa", the output would have each variation as a separate line. However, if there are multiple spintax groups in the same sentence, combining them would result in cross-variation. But the user's example seems to split each spintax group into separate lines with their own variants. So maybe the user wants each spintax group to be expanded into three lines independently, not all variations. But in the user's example, y is split
In the absence