Better way to write if statement with a lot of ||

I wonder if there is a more elegant way to write an if statement with a lot of || in java. I've given different values to alphabet letters:

A,O,I,B,T,S,M,N -> 1 
C,D,F,G         -> 5 
W,Y,Z,H,Q       -> 10

So, I want to check a given letter and if is equal with one of the 2nd group for example to get 5. Right now I'm checking like this:

String value;
if (getLetter().equals("Α")|| getLetter().equals("O") ||
    getLetter().equals("I") || getLetter().equals("B") ||
    getLetter().equals("T") || getLetter().equals("S") ||
    getLetter().equals("N") || getLetter().equals("N"))
value = "1";

is there a better way to do it?