require "stringio"

class TrueClass
  def to_s
    "YES"
  end
end

class FalseClass
  def to_s
    "NO"
  end
end

def calc(input)
  n, m = input.gets.split.map(&:to_i)
  n.times.lazy.map { input.gets }.any?(/LOVE/)
end

input = StringIO.new(<<~EOS)
10 20
TEOWMZGTZKRECDSBYSUY
IIXIGGXYZZOUGETSFZNH
JELNHDQHYKFIUEQBNQZO
PQJXLOVEBFHMJUCTASAY
FIGZOZABPAQGQZEMDVOG
AXSMSWFSPFSUPAVEZWFQ
YXXQYDCBYTHBQCNKYSEP
ZWLPXHVYFAPDYOVYRZAR
SJSLLHVMZCDBYPQXWLYB
NPGNDBMWAOPVXIGLPDXR
EOS

# puts calc(input)
puts calc($stdin)