2008l (summer semester 2008)
2008z (winter semester 2008 - 2009)
2009l (summer semester 2009)
2009z (winter semester 2009 - 2010)
2010l (summer semester 2010)
2010z (winter semester 2010 - 2011)
2011l (summer semester 2011)
2011z (winter semester 2011 - 2012)
2012l (summer semester 2012)