Program matches2;
var
 a,b,c,d,e,r,j,k,m,n,o,p,z:real;
f:text;
begin
assign(f,'matches.in');
reset(f);
readln(f,a,b,c,d,e,r,j,k,m,n,o,p);
close(f);
z:=0;
if not((a=b)and(b=c)and(c=d)and(a=d)) then z:=1;
if not((e=r)and(r=j)and(j=k)and(e=k)) then z:=1;
if not((m=n)and(n=o)and(o=p)and(p=m)) then z:=1;
assign(f,'matcher.out');
rewrite(f);
if z=0 then write(f,Yes)
       else write(f,No)
close(f);
end.