Introduction 
The GADERYPOLUKI is a simple substitution cypher used in scouting to encrypt messages. The encryption is based on short, easy to remember key. The key is written as paired letters, which are in the cipher simple replacement.
The most frequently used key is "GA-DE-RY-PO-LU-KI".
```
 G => A
 g => a
 a => g
 A => G
 D => E
  etc.
```
The letters, which are not on the list of substitutes, stays in the encrypted text without changes.
Task
Your task is to help scouts to encrypt and decrypt thier messages.
Write the `Encode` and `Decode` functions.
Input/Output
The input string consists of lowercase and uperrcase characters and white .
The substitution has to be case-sensitive. 
Example
# GADERYPOLUKI collection
GADERYPOLUKI cypher vol 1
GADERYPOLUKI cypher vol 2
GADERYPOLUKI cypher vol 3 - Missing Key
GADERYPOLUKI cypher vol 4 - Missing key madness
t = str.maketrans("gdrplkGDRPLKaeyouiAEYOUI", "aeyouiAEYOUIgdrplkGDRPLK")

encode = decode = lambda s: s.translate(t)
t = str.maketrans("gdrplkGDRPLKaeyouiAEYOUI", "aeyouiAEYOUIgdrplkGDRPLK")

encode = decode = lambda s: s.translate(t)