i = -1
my_list = [10, 20, 30, 40, 50, 60]

while i < len(my_list):
  i += 1
  # skip 0th index
  if i == 0:
      continue
  # stop iteration at 4th index
  if i == 4:
      break
  print(my_list[i])  # [20,30,40]