int but=3;
int d=50;
int rd=2000;
int pins[]={7,6,5,4};
int zari[6][4]=
{{LOW, LOW, HIGH, LOW},//1
{LOW, LOW, LOW, HIGH},//2
{LOW,LOW,HIGH,HIGH},//3
{HIGH,LOW,LOW,HIGH},//4
{HIGH,LOW,HIGH,HIGH},//5
{HIGH,HIGH,LOW,HIGH}};//6

void setup()
{
for(int i=0;i<4;i++)
  pinMode(pins[i],OUTPUT);
  
pinMode(but,INPUT);
digitalWrite(but,HIGH);
Serial.begin(9600);
}

void loop()
{
if (digitalRead(but)==LOW)
  rixe_zari();
}

void rixe_zari()
{

int result=random(1,7);
  for(int i=0;i<4;i++)
    digitalWrite(pins[i],LOW);
  
  delay(rd);
  for(int i=0;i<4;i++)
    digitalWrite(pins[i],zari[result-1][i]);
  
  Serial.println(result);
  
}