1a = "¢пр" 2 3print(a[0], a[0:1]) 4print(a[1], a[1:2]) 5print(a[2], a[2:3]) 6try: 7 print(a[3]) 8except IndexError: 9 print("IndexError") 10print(a[3:4]) 11 12print(a[-1]) 13print(a[-2], a[-2:-1]) 14print(a[-3], a[-3:-2]) 15try: 16 print(a[-4]) 17except IndexError: 18 print("IndexError") 19print(a[-4:-3]) 20 21print(a[0:2]) 22print(a[1:3]) 23print(a[2:4]) 24