calc, 107 bytes

Result

AC

Duration

1816ms

Code [DL]

"=SUBSTITUTE(SUBSTITUTE(A1;REPT("" "";50);LEFT(A1;50));A3;REPT(A3;1+FIND(""T"";A1)-MOD(FIND(A3;A1);51)))"
K

stdin

                                       T          
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                   K                              

stdout

                                       T          
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                                       T          
                   KKKKKKKKKKKKKKKKKKKKK                              

stderr

javaldx: Could not find a Java Runtime Environment!
Warning: failed to read path from javaldx
convert /tmp/code.csv -> /tmp/out/code.csv using filter : Text - txt - csv (StarCalc)

strace