how to find DDL of privilege of user

DDL of privilege of  user


select 'grant ' || privilege ||' on ' || owner || '.' || table_name || ' to "' || grantee ||'"'|| decode(grantable,'YES',' WITH GRANT OPTION',null) || ';' "TXT" 
from dba_tab_privs where grantee in (select username from dba_users where username  in ('xxxxx'));