S=["",""]
S[0]=raw_input()
S[1]="yukiko"
if S[0]==S[1]:
  S[1]="oda"
board=[raw_input() for i in range(8)]
cnt=0
for i in range(8):
    for j in range(8):
        if board[i][j]!='.':
            cnt+=1
print S[cnt%2]