Washington Redskins Coach Mike Shanahan said Thursday that his team is trying several combinations along the left side of the offensive line to try to improve the battered unit.

If tackle Trent Williams is able to return to action after missing the last two games with a high ankle sprain, the Redskins likely would move Will Montgomery from left guard (where he has filled in since Kory Lichtenstieger tore his ACL against Philadelphia) back to his original position at center, players say. Sean Locklear, who has started the last two games at left tackle, could shift to left guard.

If that happens, the Redskins would have four of their original five starters in place along the offensive line.

That still is a big if, however. Williams remained limited in practice for a second straight day Thursday.

When asked about Williams’ health, Shanahan said, “About the same as yesterday, not a whole lot of difference. Kind of set it back a little bit yesterday but he felt better today.” Shanahan has also mentioned rookie tackle Willie Smith and guard Maurice Hurt as players who have been taking snaps on the left side.

The 6-foot-4, 310-pound Locklear said he has been taking snaps at left guard, where he hasn’t played since the Senior Bowl as a prospect coming out of N.C. State in 2004. Until that game, Locklear had played right guard.

But Locklear said he feels fairly comfortable at the left guard spot and would be fine playing there if need be.

“With more snaps and more plays I get, the more quickly it’ll come,” Locklear said.

Montgomery said the adjustment from center to left guard was more drastic than the move from center to right guard would be. Montgomery played right guard last season, but said he has no preference about where he is used.

“I’m just looking forward to help this team wherever. Whatever the coaches want to do,” Montgomery said.