a=input()
b=input()
c=input()
a=a.upper()
b=b.upper()
c=c.upper()
if a=='XXX' or b=='XXX' or c=='XXX' or (a[0]=='X' and b[0]=='X' and c[0]=='X') or (a[1]=='X' and b[1]=='X' and c[1]=='X') or (a[2]=='X' and b[2]=='X' and c[2]=='X') or (a[0]=='X' and b[1]=='X' and c[2]=='X') or (a[2]=='X' and b[1]=='X' and c[0]=='X'):
    print('x')
elif a=='OOO' or b=='OOO' or c=='OOO' or (a[0]=='O' and b[0]=='O' and c[0]=='O') or (a[1]=='O' and b[1]=='O' and c[1]=='O') or (a[2]=='O' and b[2]=='O' and c[2]=='O') or (a[0]=='O' and b[1]=='O' and c[2]=='O') or (a[2]=='O' and b[1]=='O' and c[0]=='O'):
    print('o')
else:
    print('r')


n=int(input())
tab=[int(x) for x in input().split()]
i=0
while i<n:
    print(tab[i], end=" ")
    i=i+2
x=0
array=tab
array.pop(0)
while x<n-1:
    print(array[x], end=" ")
    x=x+2