There's the Nick Mangold/D'Brickashaw Ferguson axis, still going strong in its 10th year rolling together.
Whether it's Willie Colon or Brian Winters at right guard — they're the top two on the depth chart now — that position will have experience.
And there's the Seattle Connection — Breno Giacomini at right tackle and James Carpenter at left guard.
Both won Super Bowl rings with the Seahawks after the '13 season, with Breno coming East to the Green & White after that year and Carpenter after last season's Super Bowl loss to the Patriots.