Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Position | Player | Free agency\ntag | Date signed | 2013 team |
| --- | --- | --- | --- | --- |
| QB | Josh McCown | UFA | March 29 | Chicago Bears |
| RB | Kahlil Bell | UFA | August 11 | New York Jets |
| OG | Lance Louis | UFA | March 27 | Miami Dolphins |
| OG | Chris Spencer | UFA | April 1 | Tennessee Titans |
| OG | Chilo Rachal | UFA | April 10 | Arizona Cardinals |
| OT | Jonathan Scott | UFA | March 25 | Chicago Bears |
| DE | Israel Idonije | UFA | June 25 | Detroit Lions |
| DT | Amobi Okoye | UFA | – | – |
| LB | Geno Hayes | UFA | March 13 | Jacksonville Jaguars |
| LB | Nick Roach | UFA | March 15 | Oakland Raiders |
| CB | Zack Bowman | UFA | March 15 | Chicago Bears |
| CB | D. J. Moore | UFA | March 19 | Carolina Panthers |
| S | Troy Nolan | UFA | July 29 | Tampa Bay Buccaneers |
| K | Olindo Mare | UFA | – | – |
Question:
how many players play cb or og?
Answer:
5