can you dive me test for WA#13

here is the code
#include<string.h>
#include<iostream.h>
main ()
{
    bool p=true;
    char a[4], b[4], d[4], e[4], t;
    int r1=0, g1=0, b1=0, y1=0, r2=0, g2=0, b2=0, y2=0, kol=0, k=0, c[4]={0,0,0,0}, i, j;
    for (i=0; i<4; i++)
        cin>>a[i];
    for (i=0; i<4; i++)
        cin>>b[i];
    for (i=0; i<4; i++)
    {
        if (a[i]=='R')
            r1++;
        else if (a[i]=='G')
            g1++;
        else if (a[i]=='B')
            b1++;
        else
            y1++;
        if (b[i]=='R')
            r2++;
        else if (b[i]=='G')
            g2++;
        else if (b[i]=='B')
            b2++;
        else
            y2++;
    }
    if (r1!=r2 || g1!=g2 || b1!=b2 || y1!=y2)
        cout<<"different";
    else
    {
        for (i=0; i<4; i++)
            if (a[i]==b[i])
            {
                c[i]=1;
                kol++;
            }
        if (kol>=3)
            cout<<"equal";
        else if (kol==2)
        {
            if (r1>=3 || g1>=3 || b1>=3 || y1>=3)
                cout<<"equal";
            else if (r1==2 || g1==2 || b1==2 || y1==2)
            {
                for (i=0; i<4; i++)
                    if (c[i]==1)
                        d[k++]=a[i];
                if (d[0]==d[1])
                    cout<<"different";
                else
                    cout<<"equal";
            }
            else
                cout<<"different";
        }
        else if (kol==1)
            cout<<"equal";
        else
        {
            k=0;
            for (i=0; i<4; i++)
                if (c[i]==0)
                {
                    d[k]=a[i];
                    e[k++]=b[i];
                }
            for (i=0; i<4; i++)
            {
                t=d[0];
                d[0]=d[3];
                d[3]=d[2];
                d[2]=d[1];
                d[1]=t;
                for (j=0; j<4; j++)
                    if (d[j]!=e[j])
                        p=false;
                if (p)
                {
                    cout<<"equal";
                    return 0;
                }
                else
                    p=true;
            }
            if (d[1]==e[2] && d[2]==e[1])
                cout<<"equal";
            else if (d[0]==e[3] && d[3]==e[0])
                cout<<"equal";
            else
                cout<<"different";
        }
    }
    return 0;
}

RBRY
RYRB

equal

Thank you, now I've got AC.
But test 13 is
RGBY
YRGB

different