Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_92 ( co_drivers VARCHAR, team VARCHAR, pos VARCHAR, year VARCHAR )

### Question ###
Who were the co-drivers for the Racing Organisation Course team in years before 2011, who had a position of DNF?

### Accurate SQL ###

SELECT co_drivers FROM table_name_92 WHERE pos = "dnf" AND year < 2011 AND team = "racing organisation course"