In a certain code WEAK is written as 5%9$ and WHEN is written as 5*%7. How is HANK written in that code ?

Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to that group ?

In a certain code. FUEL is written as $% #6 and KITE is written @•7#. How is LIFE written in that code?