calc, 102 bytes

Result

WA

Duration

1848ms

Code [DL]

=REPT(LEFT(A1;51);LEN(A1)/51)&REPT(C3;MOD(B2;51))&REPT(B3;MOD(FIND(A3;A1)-B2;51)),=FIND(B3;A1)-1
T,K, 

stdin

                        T                         
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
 K                                                

stdout

                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
                        T                         
 KKKKKKKKKKKKKKKKKKKKKKKK

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