Memorize the standard model of elementary particles using image occlusion. The source of the chart is https://commons.wikimedia.org/wiki/File:Standard_Model_of_Elementary_Particles.svg. Brown loops indicate which bosons (red) mediate interactions between which fermions (purple and green). The three generations of matter, interactions / force carriers, mass, charge, and spin identify the names and symbols of the 12 fundamental fermions and 5 fundamental bosons in the chart.