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 s,s1:string;
    i,len:longint;
begin
 readln(s);
 len:=length(s);
 for i:=1 to len do
 case s[i] of
  'b':s1:='d'+s1;
  'd':s1:='b'+s1;
  'p':s1:='q'+s1;
  'q':s1:='p'+s1;
 end;
 if (s=s1) then writeln('Yes') else writeln('No');
end.