I wrote a program which receives a string, modifies it and then prints the output but it doesn't work 😄 where is the problem???

Question

I want to write a program that reads a string from the input and applies the following changes to it:
1- Delete all the vowels.
2- Print a dot before each silent letter.
3- Write all the remaining silent letters in lowercase. (vowels are aeiou)
https://code.sololearn.com/cCHk9qXmOmHp/?ref=app

Answer 1

# in for loop is index out range
# the way for task 2 can be
sout=''
for i in range (0, len(sentence)):
sout += '.'
sout += sentence[i]
print(sout)

Answer 2

What are silent letters here?
I+1 , I+3 results out of bounds exception...

Answer 3

Jayakrishna🇮🇳 thank u ⚘

Answer 4

JaScript Thank u so much ⚘