Try to figure out how to write a query which will show ONLY the highest revision number for a given Item number

I have been beating my head on the wall this afternoon, need more brains.

Here is the list I need from the sample data shown below (order doesn't matter, don't need the items without the dash). i.e., I need a distinct list of the highest revision number for each item.

ITEM01-RV04
ITEM02-RV04
ITEM03-RV06

SQL to create sample data:

CREATE TABLE
qtemp/temp
(ITM NUMERIC (8 , 0) NOT NULL WITH DEFAULT,
LITM CHAR (25 ) NOT NULL WITH DEFAULT);

Insert into
qtemp/temp (ITM , LITM)
Values
(1 ,'ITEM01 ')
, (2 ,'ITEM01-RV01')
, (3 ,'ITEM01-RV02')
, (5 ,'ITEM01-RV03')
, (6 ,'ITEM01-RV04')
, (7 ,'ITEM02 ')
, (8 ,'ITEM02-RV02')
, (9 ,'ITEM02-RV03')
, (10,'ITEM02-RV04')
, (11,'ITEM03 ')
, (12,'ITEM03-RV05')
, (13,'ITEM03-RV06')
, (14,'ITEM04');

Regards,
Stumped in Austin