Draw the constellation diagram for the following cases. Find the peak amplitude value for each case and define the type of modulation (ASK, FSK, PSK, or QAM):
i. Two points at (2,0) and (3,0)
ii. Two points at (3,0) and (-3,0)
iii. Four points at (2,2), (-2,2), (-2, -2), and (2,-2)
iv. Two points at (0,2) and (0,-2)