var
s:string;
i:integer;
begin
readln(s);
for i:=length(s)-4 downto 1 do
if copy(s,i,5)='child' then insert ('ren',s,i+5);
writeln(s);
readln;
end.
var
s:string;
i:integer;
begin
readln(s);
for i:=length(s)-4 downto 1 do
if copy(s,i,5)='child' then insert ('ren',s,i+5);
writeln(s);
readln;
end.