Are there similar symbols in other works of literature? (bookbrowse.com)
It's only interesting when both are slapped together, with similar symbols bleeding through the lines of reality. (mediamikes.com)
The tasty stalks were flagged with a piece of paper bearing an X, which blended into similar symbols on the test room floor; the bitter stalks had flags bearing either X's or squares. (discovermagazine.com)