The letters B,E,G,H,K,L,M,Q,S,T,U,V,W,Y (Economy Class), C,D,J,P,Z (Business Class) and A,F,O (First Class) are used to indicate the different price categories in the different service classes. For example, they indicate the respective miles credited to our Miles & More participants. Furthermore, the letter is the abbreviation of the selected flight tariff the individual tariff provisions are based on.