Problem:
Score : 100 points

Problem Statement

You are given a string S consisting of letters b, d, p and q.
Determine whether S is a mirror string.

Here, a mirror string is a string S such that the following sequence of operations on S results in the same string S:

Reverse the order of the characters in S.

Replace each occurrence of b by d, d by b, p by q, and q by p, simultaneously.

Constraints

1 \leq |S| \leq 10^5

S consists of letters b, d, p, and q.

Input

The input is given from Standard Input in the following format:

S

Output

If S is a mirror string, print Yes. Otherwise, print No.

Sample Input 1

pdbq

Sample Output 1

Yes

Sample Input 2

ppqb

Sample Output 2

No

Solution in Pascal (FPC 2.6.2) (judge verdict: Accepted)

var i,n:longint;
    a,b:ansistring;
begin
  readln(a);
  n:=length(a);
  for i:=1 to n do b:=a[i]+b;
  for i:=1 to n do
  if b[i]='b' then b[i]:='d'
  else if b[i]='d' then b[i]:='b'
  else if b[i]='p' then b[i]:='q'
  else b[i]:='p';
  if a=b then writeln('Yes')
  else writeln('No');
end.