#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

unsigned long hash()
{
    int p = 0;
    unsigned long g,h=0;
    for (;p != EOF;)
    {
        p = getchar();
        h = (h << 4) + p;
        g = (h & 0xF0000000);
        if (g) h = h^(g | (g >> 24));
    }
    return h % 104729 + 1;
}

void count(){
    int p = 0;
    unsigned long znaki = 0, linie = 0;
    for (;p != EOF;)
    {
        p = getchar();
        if (p == '\n') linie++;
        znaki++;
    }
    printf("znaki: ");
    printf("%lu", znaki);
    printf("linie: ");
    printf("%lu", linie);

}


void wypisz(){
    char tab[5][100], c;
    int p, linie = 0, x = 0;
    for(;p != EOF;)
    {
        p = getchar();
        if (linie < 3)
        {
            tab[linie][x] = p;
            c = tab[linie][x];
            //printf("%c", tab[linie][x]);
            putchar(c);
            x++;
            if (p == '\n') linie++;
        }
        else
        {
            tab[3][x] = p;
            //c = tab[3][x];
            //putchar(c);
            x++;
            if (p == '\n')
            {
                x = 0;
                while(x < 100)
                {
                    c = tab[1][x];
                    putchar(c);
                    x++;
                }
                x = 0;
                while(x<100)
                {
                    tab[0][x] = tab[1][x];
                    x++;
                }
                x = 0;
                while(x < 100)
                {
                    tab[1][x] = tab[2][x];
                    x++;
                }
                x = 0;
                while(x < 100)
                {
                    tab[2][x] = tab[3][x];
                    x++;
                }
                x = 0;
            }

        //}

    }/*
    x = 0;
    while(x < 100000)
    {
        c = tab[1][x];
        putchar(c);
        x++;
        if (tab[1][x] == '\n'){
        //printf("PIZZAJESTSMACZNA!!!!");
        break;
        }
    }
    x = 0;
    while(x < 100000)
    {
        c = tab[2][x];
        putchar(c);
        x++;
        if (tab[2][x] == '\n') break;
    }
    x = 0;
    while(x < 100000)
    {
        c = tab[3][x];
        putchar(c);
        x++;
        if (tab[3][x] == '\n') break;
    }*/

}

int main()
{
    //unsigned long x;
    //x = hash();
    //printf("%lu", x);
    //count();
    wypisz();
}