lua, 126 bytes

Result

AC

Duration

711ms

Code [DL]

o=io.read
i=o"l"
j=i
r=i:find"T"
while not j:find"K"do
print(i)
j=o"l"
end
l=j:find"K"
f=i.rep
print(f(" ",l-1)..f("K",r-l+1))

stdin

              T                                   
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
      K                                           

stdout

              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
              T                                   
      KKKKKKKKK

stderr

strace