The idea for this Kata came from 9gag today.[here](http://9gag.com/gag/amrb4r9)
[screen]:("http://img-9gag-fun.9cache.com/photo/amrb4r9_700b.jpg")
You'll have to translate a string to Pilot's alphabet (NATO phonetic alphabet) [wiki](https://en.wikipedia.org/wiki/NATO_phonetic_alphabet).
Like this:
**Input:**
`If, you can read?`
**Output:**
`India Foxtrot , Yankee Oscar Uniform Charlie Alfa November Romeo Echo Alfa Delta ?`
**Notes**
* The set of used punctuation is `.!?`.
* Punctuation should be kept in your return string, but spaces should not.
* __Xray__ should not have a dash within.
* Every word and punctuation mark should be seperated by a space ' '.
* There should be no trailing whitespace
~~~if:php
Although the proper alphabet for j is `Juliett` you have to use `Juliet` here
~~~
db = {
     'a': 'Alfa',
     'b': 'Bravo',
     'c': 'Charlie',
     'd': 'Delta',
     'e': 'Echo',
     'f': 'Foxtrot',
     'g': 'Golf',
     'h': 'Hotel',
     'i': 'India',
     'j': 'Juliett',
     'k': 'Kilo',
     'l': 'Lima',
     'm': 'Mike',
     'n': 'November',
     'o': 'Oscar',
     'p': 'Papa',
     'q': 'Quebec',
     'r': 'Romeo',
     's': 'Sierra',
     't': 'Tango',
     'u': 'Uniform',
     'v': 'Victor',
     'w': 'Whiskey',
     'x': 'Xray',
     'y': 'Yankee',
     'z': 'Zulu',
     '!': '!',
     '?': '?',
     '.': '.',
     }

def to_nato(words):
    res = ''
    w = words.lower()
    for i in w:
        if i == ' ':
            continue
        else:
            res += db[i] + ' '
    return res.rstrip(' ')
db = {
     'a': 'Alfa',
     'b': 'Bravo',
     'c': 'Charlie',
     'd': 'Delta',
     'e': 'Echo',
     'f': 'Foxtrot',
     'g': 'Golf',
     'h': 'Hotel',
     'i': 'India',
     'j': 'Juliett',
     'k': 'Kilo',
     'l': 'Lima',
     'm': 'Mike',
     'n': 'November',
     'o': 'Oscar',
     'p': 'Papa',
     'q': 'Quebec',
     'r': 'Romeo',
     's': 'Sierra',
     't': 'Tango',
     'u': 'Uniform',
     'v': 'Victor',
     'w': 'Whiskey',
     'x': 'Xray',
     'y': 'Yankee',
     'z': 'Zulu',
     '!': '!',
     '?': '?',
     '.': '.',
     }

def to_nato(words):
    res = ''
    w = words.lower()
    for i in w:
        if i == ' ':
            continue
        else:
            res += db[i] + ' '
    return res.rstrip(' ')