wpa mASK ATTACK

HELLO, STILL LEARNING ON MASK ATTACK MODE.. IAM PRACTICING ON MY UVERSE ROUTER AND THE WPA2 PASSPHRASE CONTAINS 10 VALUES OF WICH EIGHT ARE UPPER CASE LETTERS AND ONLY 2 NUMERIC DIGIGTS..

HOW WOULD I MASK THAT?? would anyone give an example thanks..


thanks everyone> your help greatlyy aprreciated