Original sentence: 13 (+8).27 (+11).Deliveries: four (leased) in 2010, one (leased) in 2011, one (leased) in 2012.It consists of the following aircraft as of August 2009
Edited sentence: 27 (+5).6 (+2).6 aircraft leased from GECAS plus 2 options directly with Boeing  Deliveries: four (leased) in 2010, one (leased) in 2011, one (leased) in 2012.It consists of the following aircraft (and orders) as of August 2009