"🔳🔲🔳🔳🔲🔲" represents a pattern of alternating square shapes, with the filled squares denoted by "🔲" and the empty squares represented by "🔳". "| |⬜⬛⬜⬜⬛⬛" is a similar pattern, but using different symbols. It depicts a sequence of vertical bars "|" followed by a combination of white "⬜" and black "⬛" squares.