Oracle Database Discussions

I'm having trouble finding out if this is even possible in Oracle.

Here is what I'm trying to accomplish with my view. A subject takes a survey numerous times across numerous dates. Depending on the responses to different questions, that subject is marked as having a set disease or affliction. The view that I'm building collects the necessary answers for each survey into one place (the first common table expression), then in subsequent CTEs, I'm adding the disease classification when the responses to the needed questions match. Sometimes the requirements state that the survey can't already be positive for other diseases, meaning that I need to ultimately discount them when checking subsequent diseases (each disease is built using it's own CTE of which there are 13). I built the query which performs these tasks with no problems. It runs and gives the responses that I'm looking for.

The problem comes into play when I attempt to wrap the existing working query into a create view process. When I add CREATE OR REPLACE VIEW TESTENV.TESTVIEW AS ( and the ending ); after the query, it is giving me the error: ORA-32034: unsupported use of WITH clause.

Am I getting the error simply because I can't put CTE's into views, or is it because the syntax for putting CTEs into Views is different than a normal view build process? Also, in case it makes a difference, the version of Oracle I'm using is: Oracle 10g.

Thank you.