int btn1 = 2;
int opt = 0;
void setup() {
  int i;
  for(i=3;i<=12;i++)
  {
    pinMode(i,OUTPUT);
    digitalWrite(i, LOW);
  }
  pinMode(btn1, INPUT);
  //Serial.begin(9600);
}

void loop() {
  int btnstate;
  btnstate = digitalRead(btn1);
  if(btnstate == HIGH)
  {
    opt++;
  }
  //Serial.println(opt);
  if(opt == 1)
  {
    pat1();    
  }
  else if(opt == 2)
  {
    pat2();
  }
  else if(opt == 3)
  {
    pat3();
  }
  else if(opt == 4)
  {
    pat4();
  }
  else
    opt = 0;
}

void pat1()
{
  int i;
  for(i=3;i<=12;i++)
  {
    delay(100);
    digitalWrite(i, HIGH);
  }
}

void pat2()
{
  int i;
  for(i=12;i>=3;i--)
  {
    delay(100);
    digitalWrite(i, LOW);
  }
}

void pat3()
{
  int i;
  for(i=0;i<5;i++)
  {
    delay(150);
    digitalWrite(i+3, HIGH);
    digitalWrite(12-i, HIGH);
  }
}

void pat4()
{
  int i;
  for(i=0;i<5;i++)
  {
    delay(150);
    digitalWrite(i+3, LOW);
    digitalWrite(12-i, LOW);
  }
}