import Data.List
 
allChars = enumFromTo minBound maxBound :: String
unicode = length . tail . ( enumFromTo minBound)
 
isUpper = flip elem [ 'A'..'Z' ]
isLower = flip elem [ 'a'..'z' ]
 
toLowOrSp x
  | isLower x = x
  | isUpper x = ( allChars !! ) $ unicode 'a' + unicode x - unicode 'A'
  | otherwise = ' '
 
hasAllAlph = ( == [ 'a' .. 'z' ] ) . tail . nub . sort . map toLowOrSp . ( ' ' : )
 
chooseTheLine ls = snd $ head $ sort [ ( len, l ) |
    l <- ls, hasAllAlph l,
    let len = length l,
    let m = nub $ sort $ map toLowOrSp l,
    True ]
 
main = do
    ls <- ( return . lines ) =<< getContents
    let theLine = chooseTheLine ls
    print theLine

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

VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIGEgbGF6eSBkb2cuClRoZSBqYXksIHBpZywgZm94LCB6ZWJyYSBhbmQgbXkgd29sdmVzIHF1YWNrIQpQYWNrIG15IGJveCB3aXRoIHNldmVuIGRvemVuIGxpcXVvciBqdWdzLgpUaGUgaG9yc2UsIHBpZywgZm94LCB6ZWJyYSBhbmQgbXkgd29sdmVzIHF1YWNrIQpKYWNrZGF3cyBsb3ZlIG15IHNtYWxsIHNwaGlueCBvZiBxdWFydHouCkphY2tkYXdzIGxvdmUgbXkgYmlnIHNwaGlueCBvZiBxdWFydHouClRoZSBxdWljayBicm93biBmb3gganVtcHMgb3ZlciBhIGxhenkgY2F0LgpQYWNrIG15IGJveCB3aXRoIGZpdmUgZG96ZW4gbGlxdW9yIGp1Z3MuCg==

The quick brown fox jumps over a lazy dog.
The jay, pig, fox, zebra and my wolves quack!
Pack my box with seven dozen liquor jugs.
The horse, pig, fox, zebra and my wolves quack!
Jackdaws love my small sphinx of quartz.
Jackdaws love my big sphinx of quartz.
The quick brown fox jumps over a lazy cat.
Pack my box with five dozen liquor jugs.