In past few years '12' was Cook and Kendricks.
If the call was '12 Bruin' was Harkey and Cook or Kendricks. It just meant though he was technically listed as a TE in some '12' personnel groupings if it was 12 bruin it usually meant he was a fullback, making it a '21' hybrid players mess up things like that, they is overlap if a guy is a hybrid player. Same goes for Austin when he's one of the RBs, though they did that more in 2014 and 2013 rather than 2015.
