SCH_TV_A
SCH_TV_B
SCH_TV_C,D
SCH_TV_E,F
SCH_TV_G
SCH_TV_H,I
SCH_TV_J,K,L
SCH_TV_M,N,O
SCH_TV_P,Q
SCH_TV_R,S,T
SCH_TV_U,V,W,Y,Z