program main
  implicit none
  integer::T,len,i,j,k,m,diff,minimum
  character*100::S
  read *,T

  do i=1,T
     read *,S
     len = LEN_TRIM(S)
     minimum = 11
     do j=1,len-10
        do k=j+4,len-6
           minimum = MIN(minimum, &
                hamming_dist(S(j:j+3),"good") + &
                hamming_dist(S(k:k+6),"problem"))
        end do
     end do
     print '(i0)',minimum
  end do
contains
  function hamming_dist(S1,S2) result (dist)
    character(*)::S1,S2
    integer::len,dist,i
    len = LEN_TRIM(S1)
    dist= 0
    do i=1,len
       if(S1(i:i).ne.S2(i:i)) dist = dist + 1
    end do
  end function hamming_dist
end program main