View Compilation Error

0_0_15515448_19785.pas(4,1) Error: Duplicate identifier "a"
0_0_15515448_19785.pas(13,4) Fatal: There were 1 errors compiling module, stopping
Fatal: Compilation aborted
Error: Pascel\bin\i386-win32\ppc386.exe returned an error exitcode (normal if you did not specify a source file to be compiled)