There are four waves in this figure. The second one is labeled C and 33 and one third cycles are showing. The first one is labeled USB. It has half the amplitude as the C wave and 35 and a third cycles are showing. The third wave also has half the amplitude as the C wave and 31 and a third cycles are showing. This wave is labeled LSB. The total width of all the drawings are the same so more cycles means a higher frequency. The bottom wave is identical to the bottom wave in figure 1 showing a carrier which is amplitude modulated at 100 percent.