program main
  implicit none
  character*300::Stmp,S
  character*3,parameter::w='ｗ'
  character*300::Sw,output
  integer::len,wlen,start,before,i,swlen,j
  read *,Stmp
  do i=1,LEN_TRIM(Stmp),3
     if(.not.str_eq(Stmp(i:i+2),w(1:3))) exit
  end do
  S = Stmp(i:)

  len = LEN_TRIM(S)
  wlen = get_wlen(S)
  Sw = REPEAT(w,wlen)
  swlen = wlen*LEN_TRIM(w)
  start = 1
  do i=2,len
     if(str_eq(S(i:i+swlen-1),Sw(1:swlen))) then
        do j=i-1,1,-1
           if(str_eq(S(j:j+2),w)) then
              before = j+3
              exit
           end if
        end do
        print '(a)',S(before:i-1)
     end if
  end do
contains
  function str_eq(S1,S2) result(equal)
    character(*)::S1,S2
    integer::len,i
    logical::equal
    equal=.true.
    len = LEN_TRIM(S2)
    do i=1,len
       if(S1(i:i).ne.S2(i:i)) then
          equal = .false.
          return
       end if
    end do
  end function str_eq
  function get_wlen(S) result(wlen)
    character(*)::S
    character*3,parameter::w='ｗ'
    integer::i,j,len,wmax=0,wlen,wprev
    len = LEN_TRIM(S)
    wlen = 0
    wprev = 0
    do j=1,len-2
       if(S(j:j+2).eq.w(1:3)) then
          if((wprev+3.ge.j.or.wprev.eq.0)) then
             wprev = j
             wlen = wlen + 1
             wmax = MAX(wmax, wlen)
          else
             wprev = j
             wlen = 1
             wmax = MAX(wmax, wlen)
          end if
       end if
    end do
    wlen = wmax
  end function get_wlen
end program main