011524, 020102, 020130, 020904, 021114, 060701, 120109, 150701, 180510, 200325, 210108, 260117, 2601 - Sound waves, including designs depicting sound. Shadows or silhouettes of men. Men wearing two or three piece business suits. Sitting or kneeling. Hands and fingers forming the following: handshake, finger pointing, fingers walking, OK sign, and thumbs up or thumbs down. Cities from a distant perspective, skylines. Desks. Cog wheels (wheels with teeth), gears, several wheels in juxtaposition. Lifts, fork-lifts. Other paper goods, including file folders, adhesive note pads, tissue paper, stencils and facial tissue. Jigsaw puzzles. Two concentric circles. Circles within a circle. Circles that are totally or partially shaded. Five or more circles. Plain single line triangles.