To create a string that concatenates values of cells in a specific format, you can use the CONCATENATE function or the ampersand (&) symbol in Google Sheets. Here is an example formula that uses a loop to concatenate the values of cells A6:B6, A7:B7, A8:B8, and so on up to A12:B12:
```
=ArrayFormula(CONCATENATE(IF(ROW(A6:A12)=6,"",", "),"A"&ROW(A6:A12)&":B"&ROW(A6:A12)))
```

This formula uses the ARRAYFORMULA function to apply the same formula to all the cells in the output range. The IF function checks if the row number is equal to 6, and if it is not, it adds a comma and space before concatenating the cell values. The ROW function generates a list of numbers from 6 to 12, which are used to reference the cells in column A and B. Finally, the CONCATENATE function combines the text and cell references into a single string.

You can adjust the range A6:A12 in the formula to match the specific range of cells you want to concatenate.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence