Table:
text: British Rail Class 377
Fleet details
Fleet details
Class_ Operator_ No_Built Year_Built Cars_per_Set Unit_nos_
Class 377/1 Southern 64 2002–2003 4 377101-164
Class 377/2 Southern 12 2003–2004 4 377201-206 377208-210 377213-215
Class 377/2 First Capital Connect 3 2003–2004 4 377207 377211-212
Class 377/3 Southern 28 2001–2002 3 377301-328
Class 377/4 Southern 75 2004–2005 4 377401-475
Class 377/5 First Capital Connect 23 2008–2009 4 377501-523
Class 377/6 Southern 26 2012-2014 5 377601-626
Class 377/7 Southern 8 2014 5 377701-708

Question: Which class of British Rail Class 377 built fewer than 12 numbers operated by Southern?