search for: br_f01

Hi All, Just hoping some one can give me a hand with a problem... I have a dataframe (DF) with about 5 million entries that looks something like the following: >DF ID Cl Co Brd Ind A AB AB 1 S-3 IND A BR_F BR_F01 1 0 0 2 S-3 IND A BR_F BR_F01 1 0 0 3 S-3 IND A BR_F BR_F01 1 0 0 4 S-3 IND A BR_F BR_F01 1 0 0 5 S-3 IND A BR_F BR_F01 1 0 0 6 S-3 IND A BR_F BR_F01 0 1 0 7 S-3 IND A BR_F BR_F02 0 0 1 8 S-3 IND A BR_F BR_F02 0 1 0 9 S-3 IND A BR_F BR_F02 1 0 0 10 S-3 IND...

...COM 37470 ADR 4523C7 COM 57943 ADR 4523E7 COM 47470 ADR 45256B COM 60573 ADR 4525D6 Object Queue 0 Primitive Queue 0 RESIDENT TOP 8A8E20 LoadReq FS_LoadRequest: data.cnf 008A8E6C 1 HITEX_INIT: Id: 7591 Name: tga/br_s15.tga HITEX_INIT: Id: 59777 Name: tga/br_f00.tga HITEX_INIT: Id: 59778 Name: tga/br_f01.tga HITEX_INIT: Id: 59779 Name: tga/br_f02.tga HITEX_INIT: Id: 59780 Name: tga/br_f03.tga HITEX_INIT: Id: 7554 Name: tga/br_s00.tga HITEX_INIT: Id: 7555 Name: tga/br_s01.tga HITEX_INIT: Id: 7556 Name: tga/br_s02.tga HITEX_INIT: Id: 7557 Name: tga/br_s03.tga HITEX_INIT: Id: 7558 Name: tga/br_s0...