#include<iostream>
using namespace std;

void muestra(char a[][test], int fila){ //indicar tamaño
    for(int i = 0;i < fila; i++){
        cout << "[ ";
        for(int j = 0; j < 2;j++){
            cout << a[i][j]<<' ';
        }
    cout<<']'<<endl;
    }
}

int main(){
    int fila = 6, test = 2;
char b[6][test] = {{'a','b'},{'c','d'},{'e','f'},{'g','h'},{'i','j'},{'k','l'}}; // designar tamaño
    char a[4][test] = {{'a','b'},{'c','d'},{'e','f'},{'g','h'}};
    muestra(a,fila);

}