Replace S [ i ] with vow [ j ] iif S [ i ] is a vowel , and increment j by 1
if ( S [ i ] == ' a ' or S [ i ] == ' e ' or S [ i ] == ' i ' or S [ i ] == ' o ' or S [ i ] == ' u ' ) : NEW_LINE INDENT S [ i ] = vow [ j ] ; NEW_LINE j += 1 ; NEW_LINE DEDENT