python3, 73 bytes

Result

AC

Duration

766ms

Code [DL]

a,*b,c=open(0)
i=a.find("T")
d=c.rstrip()+"*"*i
print(a+a*len(b)+d[:i+1])

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                 
                K****************

stderr

strace