for (int i = 0; i < 3; i++) {
            System.out.println("Ingrese palabra "+(i+1)+":");
            op = tec.readLine();
            if ((int) op.length() != (int) lista1.get(i)) {
                System.out.println("Ingresa la plabra correcta");
                i--;
            } else {
                lista2.add(op);

            }
        }