package main

import (
	"fmt"
	"strings"
)

func main() {
	var S, r string
	fmt.Scan(&S)
	player := make([]string, 2)
	player[0] = S
	if S == "oda"{
		player[1] = "yukiko"
	}else{
		player[1] = "oda"
	}
	count := 0
	for i:=0; i<8; i++ {
		fmt.Scan(&r)
		count += strings.Count(r, ".")
	}
	fmt.Println(player[(64-count)%2])
}