Once I threw in the sheets pillowcases and pajamas the towels didn’t fit in the washing machine.
Which version places commas correctly in the sentence?

Once I threw in, the sheets, pillowcases, and pajamas, the towels didn’t fit in the washing machine.

Once I threw in the sheets, pillowcases, and pajamas, the towels, didn’t fit in the washing machine.

Once I threw in the sheets, pillowcases and pajamas, the towels, didn’t fit in the washing machine.

Once I threw in the sheets, pillowcases, and pajamas, the towels didn’t fit in the washing machine.