sed, 64 bytes

Result

AC

Duration

667ms

Code [DL]

1h
1!{$!g
${x
:1
/T /{s/T /T/;x;s/K /K/;x}
t1
x
:2
s/K /KK/
t2}}

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     
                                       KKKKKK

stderr

strace