CHEFROUT

#include <iostream>

using namespace std;

int main()
{
    int t,j,i;


    cin>>t;

    while(t--){
        string s;
        char c[100000];
        cin>>s;
        c[0] = s[0];
        j=1;
        for(i=1; i < s.length(); i++)
        {
            if(s[i]!=s[i-1])
            {
                c[j] = s[i];
                j++;
            }
        }
        int flag = 0;
        //for(i = 0; i < j; i++)
        //    cout<<c[i]<<" ";

        //cout<<endl;
        for(i = 0; i < j-1; i++)
        {
            if(c[i]=='E' && c[i+1]=='C')
            {
                flag=1;
                break;
            }
            else if(c[i]=='S' && c[i+1]=='E')
            {
                flag=1;
                break;
            }
            else if(c[i]=='S' && c[i+1]=='C')
            {
                flag=1;
                break;
            }

        }
        if(flag==1)
            cout<<"no"<<endl;
        else
            cout<<"yes"<<endl;

    }
    return 0;
}