Sunday’s preseason finale served as an embarrassing showcase for a Patriots offensive line that still isn’t settled with less than two weeks until the regular season.

The Patriots’ offensive line nearly got veteran quarterback Jacoby Brissett injured when they were running into each other on a pull block. Left guard Sidy Sow suffered an ankle injury, there were two muffed snaps, and the line was penalized 10 times on the night.

The Patriots went with a new combination on Sunday night with Chukwuma Okorafor at left tackle, Sow at left guard, Nick Leverett at center, rookie Layden Robinson at right guard and Mike Onwenu at right tackle. Starting center David Andrews got the night off, but shifting Okorafor from right tackle and Onwenu from right guard was a byproduct of Vederian Lowe suffering an injury in practice last week.

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“We still have some time to figure out what the best combination is,” Mayo said Monday on a conference all with the media. “I would say those guys, pre-snap penalties aside, there were definitely times where that unit out there did a pretty good job for the quarterback, and also, especially in the run game. Anytime you average over five yards of carry, that’s a good day in the run game. Now in saying that, I’m not sure what the exact combination looks like, but we got in at four o’clock this morning, and still cranking through the film, but we’ll have a group ready to go for Cincy.”

Patriots quarterbacks were sacked just once in Sunday night’s game. The team averaged 5.1 yards per rushing attempt.

The Patriots’ offensive line was flagged eight times in the first half and four times for illegal formation with Okorafor (three times) and Onwenu (once) lining up too far back off of the line of scrimmage.

“The most frustrating thing for me is if a referee or an umpire tells you, he warns you multiple times 00 both tackles — they warn you multiple times that you’re too far back, and then they throw the flag a few times, we just have to do business as business is being done,” Mayo said. “It’s ‘move up.’ I mean, there’s no one else to blame. It’s pretty clear when you watch it on film, you have to break the center’s hip. And that was the most disheartening part for me as a coach, and it was definitely a learning experience for me as well, where I just have to be tougher on those things here going forward. But if you want to blame someone for that, you could blame me for that one.”

There are far more questions than answers on the Patriots’ offensive line, and Mayo raised one more during an appearance on WEEI’s “The Greg Hill Show” on Monday morning.

“We have an opportunity to improve our team through the waiver wire, and we’re in a very unique situation right now where we’re third on the waiver wire, and there’ll be some good players that get released, and we’re going to try to take advantage of that,” Mayo said. “The starting guard or the starting tackle may not be in our team today.”

One the roster, the Patriots’ top candidates at tackle are Lowe, Okorafor and Onwenu. Andrews will be positioned at center. At guard, they have Sow, Onwenu, Robinson, Michael Jordan and Nick Leverett as top options.

And more could be coming after Tuesday’s cuts on the waiver wire.