#include<cstring>
#include<cstdio>

char s[100007];
int ch[128],i=1;

int main()
{
    ch['p']=1,ch['d']=2,ch['q']=3;
    scanf("%s",s+1);
    for(l=strlen(s+1);i<=(l>>1)+1;++i)
        if(ch[s[i]]^((ch[s[l-i+1]]+2)%4))
        {printf("No\n");break;}
    printf("Yes\n");
    return 0;
}