title: hello friends i cant execute my else condition
body: <p>The program must accept a string S as the input. The program must replace every vowel in the string S by the next consonant (alphabetical order) and replace every consonant in the string S by the next vowel (alphabetical order). Finally, the program must print the modified string as the output.</p>
  
  <pre><code>s=input()
  
  z=[let for let in s]
  
  alpa="abcdefghijklmnopqrstuvwxyz"
  
  a=[let for let in alpa]
  
  v="aeiou"
  
  vow=[let for let in v]
  
  
  for let in z:
  
      if(let=="a"or let=="e" or let=="i" or let=="o" or let=="u"):
  
          index=a.index(let)+1
  
          if index!="a"or index!="e"or index!="i"or index!="o"or index!="u":
  
                 print(a[index],end="")
      else:
  
          for let in alpa:
  
              ind=alpa.index(let)
  
              i=ind+1
  
              if(i=="a"or i=="e" or i=="i"or i=="o"or i=="u"):
  
                  print(i,end="")
  </code></pre>
  
  <p>the output is :</p>
  
  <pre><code>i/p orange
  
  pbf
  </code></pre>
  
  <p>the required output is:</p>
  
  <pre><code>i/p orange 
  
  puboif    
  </code></pre>