Error copying an array in another in c

The truth happens to me something very strange is that I copy one matrix in another as I have always done but it is badly copied I leave photo .

As you can see in the photo, the first 3 columns are copied well, but 4 copies the first one with a space down and then copies what is in the 4 column in the last one without reason (there must be a reason but there is no which is), if someone knows why it happens I would be grateful I'll leave the code.

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <string.h>
#include <time.h>

int main(){

        char *p=getenv("USER");
        char frase[1024];

        printf("  [>>] Entroduce un frase para cifrar.\n" );
        printf("    %s~$ ",p );
        scanf("%s", frase);

        int clavei[3][3];
        int subclave[3][43];
        int rotword[3][0];

        int x,y;
        int nram;
        int i,j;
        int aux; 

        for(i=0 ; i<=3 ; i++){
                for(j=0 ; j<=3 ; j++){
                        nram =  0 + rand() % ((255 + 0) - 0);
                        clavei[i][j] = nram;
                        printf("%x ,", clavei[i][j]);
                }

                printf("\n");
        }

        printf("------------------------------------------------------------------------------------------------------------------------------------------");
        printf("\n");                                                   
        for(i=0 ; i<=3 ; i++){
                for(j=0 ; j<=43 ; j++){
                        subclave[i][j] = 0;
                }
        }

        for(i=0 ; i<=3 ; i++){
                for(j=0 ; j<=3 ; j++){
                        subclave[i][j] = clavei[i][j];
                }

        }


        for(i=0 ; i<=3 ; i++){
                for(j=0 ; j<=43 ; j++){
                        printf("%x ,", subclave[i][j]);
                }

                printf("\n");
        }

        printf("\n");
        printf("  Adios :)\n");                                         
        return 0;                                                                       
}