Most parallel texts you'll find will be side-by-side ones. The name is more or less self-explaining, though is should be said that it is normally whole paragraphs that are juxtaposed rather than single lines: language1language1language1language1 . . language2language2language2 language1language1language1language1 . . language2language2language2 language1language1language1 . . . . . . . . . language2language2language2language2