#include <iostream>
#include <string.h>
using namespace std;

int main()
{
   char s[5] ;
    int n , i , a , b , c , d ;
cin>>n ;
    for ( i=0 ; i<n ; i++ )
    {
        cin>>s;
        strcpy(s+2 , s+3 ) ;
        a=s[0];
        b=s[1];
        c=s[2];
        d=s[3] ;

        if ( a==b-1 && b==c-1 && c==d-1 )
        {
            cout<<"YES"<<endl;
        }else
        if ( a==b && b==c && c==d )
        {
          cout<<"YES"<<endl;
        }else
            if ( a==c && b==d )
            {
                cout<<"YES"<<endl;
            }else
            if ( c==0 && d==1 )
            {
                cout<<"YES"<<endl;
            }else
            cout<<"NO"<<endl ;


        s[0]=NULL;
    }
}