File 1
ID121 ABC14
ID122 EFG87
ID145 XYZ43
ID157 TSR11
ID181 ABC31
ID962 YTS27
ID567 POH70
ID921 BAMD80

File 2
ID111 RET61
ID157 TSR11
ID181 ABC31
ID962 YTS27
ID452 FYU098
ID121 ABC14
ID122 EFG87

File 3
ID121 ABC14
ID612 FLOW12
ID122 EFG87
ID745 KIDP36
ID145 XYZ43
ID157 TSR11

.........

File 25

ID122 EFG87
ID809 EYE24
ID157 TSR11
ID921 BAMD80
ID389 TOP30
ID121 ABC14


Output:

ID121 ABC14
ID122 EFG87
ID157 TSR11