Write a program to iterate and print a dataframe row-wise at a time and print only first five rows.

Find the error in the following code fragments:

S2 = pd.Series([101, 102, 1-2, 104])
print (S2.index)
S2.index = [0.1.2.3, 4, 5]
S2[5] = 220
print (S2)

Find the error in following code fragment

S1 = pd.Series(1, 2, 3, 4, index = range(7))  

Find the error in the following code fragments:

S2 = pd.Series([1, 2, 3, 4, 5], index = range(4))