package main

import (
	"bufio"
	"fmt"
	"io"
	"os"
	"strings"
)

const ROWSIZE int = 8

func main() {
	sc := NewScanner(os.Stdin)
	S, _ := sc.NextLine()
	var B [ROWSIZE]string
	for i := 0; i < ROWSIZE; i++ {
		B[i], _ = sc.NextLine()
	}

	fmt.Println(solve(S, B))
}

func solve(black string, rows [ROWSIZE]string) string {
	players := [...]string{"yukiko", "oda"}
	var white string
	if black == players[0] {
		white = players[1]
	} else {
		white = players[0]
	}

	stones := 0
	for _, r := range rows {
		stones += ROWSIZE - strings.Count(r, ".")
	}

	if stones%2 == 0 {
		return black
	} else {
		return white
	}
}

type Scanner struct {
	*bufio.Scanner
}

func NewScanner(r io.Reader) *Scanner {
	return &Scanner{
		bufio.NewScanner(r),
	}
}

func (s *Scanner) NextLine() (string, error) {
	s.Scanner.Split(bufio.ScanLines)
	return s.nextToken()
}

func (s *Scanner) nextToken() (string, error) {
	sc := s.Scanner
	if sc.Scan() {
		return sc.Text(), nil
	}
	if sc.Err() != nil {
		return "", sc.Err()
	}
	return "", io.EOF
}