4001 - 4054 built 2006 - 2007
4055 - 4072 built 2011
21.01.2014 there was a collision between 4015 and 4046. Sections 4046A 4015C 4015B were scrapped 4015A was put with 4046C and 4046B and these three remain in service as 4046 (C is the centre section)