int a[6] = {1, 0, 0, 0, 0, 1 };
int a1[6] = {0, 1, 0, 0, 1, 0};
int a2[6] = {0, 0, 1, 1, 0, 0};
int a3[6] = {0, 1, 0, 0, 1, 0};
int a4[6] = {1, 0, 0, 0, 0, 1} ;



void setup() {
  for (int x = 9; x >= 4; x--) {
    pinMode(x, OUTPUT);

  }
} // end setup


void loop() {
  int i = 0 ;
  for (int y = 9 ; y >= 4 ; y--) {
    digitalWrite(y, a[i]);
    i++;
  }
  delay(1000);
  int i1 = 0 ;
  for (int y = 9 ; y >= 4 ; y--) {
    digitalWrite(y, a1[i1]);
    i1++;
  }
  delay(1000);
  int i2 = 0 ;
  for (int y = 9 ; y >= 4 ; y--) {
    digitalWrite(y, a2[i2]);
    i2++;
  }
  delay(1000);
  int i3 = 0 ;
  for (int y = 9 ; y >= 4 ; y--) {
    digitalWrite(y, a3[i3]);
    i3++;
  }
  delay(1000);
  int i4 = 0 ;
  for (int y = 9 ; y >= 4 ; y--) {
    digitalWrite(y, a4[i4]);
    i4++;
  }
  delay(2000);
}