A guard of German soldiers stood behind us, muttering together in their own language.

Upon occasions I have seen them muttering together when they thought that there were no others about.

For ten minutes they muttered together, then returned.

The two installers muttered together, looking like men trying to figure out a way to blame somebody else and not succeeding.

Leonardo looked up from the long table, covered with fabrics where he and Biff muttered together.

The three muttered together, then the questioner turned to Aufors.

Still I noted that they muttered together and seemed alarmed.

Sometimes the two of them could be seen muttering together in the playground.

They muttered together on the other side of the door.

They moved away from Gomez's dogs and muttered together in disconcerted awe.