const
  names = [
    "oda",
    "yukiko",
  ]

let
  s = readLine stdin
var
  cnt = 0

for _ in 0 ..< 8:
  let
    b = readLine stdin

  for c in b:
    if c != '.':
      inc cnt

if cnt mod 2 == 0:
  echo s
else:
  case s
  of names[0]:
    echo names[1]
  else:
    echo names[0]