Why didn’t we play against the Angels, A’s, or Mariners in 2010?

I just remembered how rare it used to be for us to play the Angels in interleague play (though we didn't play the Indians AT ALL between 2002 and 2011!). I conclude the MLB's schedule makers used to do a lazy job, but they've gotten a little better.

Between 2007 and 2013, we never played the AL West except the Rangers. These are the teams we played in interleague play:

2001: AL Central

2002: AL West

2003: AL East

2004: AL West

2005: AL East

2006: AL Central

2007: Mostly AL West, but we played the White Sox too for some strange reason

2008: AL East

2009: AL Central

2010: Mix. We played the Royals, Yankees, Rays, and Rangers

2011: AL East

2012: AL Central

2013: We move to the AL and play the NL Central