021107, 021114, 130113, 150502, 150503, 150701, 190105, 200101, 200301, 200308, 200309, 241715, 2615 - Hands, fingers and arms. Hands and fingers forming the following: handshake, finger pointing, fingers walking, OK sign, and thumbs up or thumbs down. Electric lightbulbs, flashbulbs, fluorescent tubes. Computer keyboards, numeric keypads. Desktop computers, laptop computers and computer monitors. Cog wheels (wheels with teeth), gears, several wheels in juxtaposition. Briefcases, attache cases, portfolios. Pencils, pens (excluding quill pens), crayons, pen points, chalk, markers. Paper with furled, fringed or scalloped edges. Graph paper, diagrams, blueprints, the periodic table. Tablets, stacks of sheets of paper, including writing pads. Check marks. More than one polygon. Polygons that are completely or partially shaded. Straight line(s), band(s) or bar(s). Horizontal line(s), band(s) or bar(s).