int a=2;
int b=3;
int c=4;
int d=5;
int e=6;
int f=7;
int g=8;
int dp=9;
int first=9;
int second=10;


void setup() 
{
pinMode(a, OUTPUT);
pinMode(b, OUTPUT);
pinMode(c, OUTPUT);
pinMode(d, OUTPUT);
pinMode(e, OUTPUT);
pinMode(f, OUTPUT);
pinMode(g, OUTPUT);
pinMode(dp, OUTPUT);
pinMode(first, OUTPUT);
pinMode(second, OUTPUT);

digitalWrite(first, LOW);
digitalWrite(second, LOW);
}

void loop() 
{
  digitalWrite(first, HIGH);
  three();
  delay(10);
  clear();
  digitalWrite(first, LOW);

  digitalWrite(second, HIGH);
  two();
  delay(10);
  clear();
  digitalWrite(second, LOW);
}

void three()
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, LOW);
  digitalWrite(d, LOW);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, LOW);
  digitalWrite(dp, HIGH);

}

void two()
{
  digitalWrite(a, LOW);
  digitalWrite(b, LOW);
  digitalWrite(c, HIGH);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, HIGH);
  digitalWrite(g, LOW);
  digitalWrite(dp, LOW);

}

void clear()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  digitalWrite(dp, HIGH);

}