Arduino 4 digit 7 segment countdown

I am building minutes and seconds countdown using only arduino uno and 4 dig 7 seg display without using any shift registers or other ICs. I have made a code that counts down fourth digit every second from 9 to 0. However I have no idea how to modify the code that it would count down 60 second and 60 minutes without making the sketch 4956 pages long. I tried to modify it already but I don`t know how to get rid of delay() function that causes problems. Thank you for your time and sory for bad english.

int A = 6;
int B = 7;
int C = 8;     //segments on IO pins
int D = 9;
int E = 10;
int F = 11;
int G = 12;

void one()
{
  digitalWrite(D, HIGH);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, HIGH);  // creating all numbers needed
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  
}

void two()
{
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, HIGH);
  digitalWrite(G, LOW);
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, HIGH);
  
}

void three()
{
  digitalWrite(D, LOW);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, LOW);
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  
}

void four()
{
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(A, HIGH);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  
}

void five()
{
  digitalWrite(D, LOW);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(A, LOW);
  digitalWrite(B, HIGH);
  digitalWrite(C, LOW);
  
}

void six()
{
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(A, LOW);
  digitalWrite(B, HIGH);
  digitalWrite(C, LOW);
  
}

void seven()
{
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  
}

void eight()
{
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  
}

void nine()
{
  digitalWrite(D, LOW);
  digitalWrite(E, HIGH);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  
}

void zero()
{
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, HIGH);
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  
}

void seconds_countdown()
{
  nine();
  delay(1000);
  eight();
  delay(1000);  // countdown with problematic delays
  seven();
  delay(1000);
  six();
  delay(1000);
  five();
  delay(1000);
  four();
  delay(1000);
  three();
  delay(1000);
  two();
  delay(1000);
  one();
  delay(1000);
  zero();
  delay(1000);
}

void setup()
{

  pinMode(A, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(C, OUTPUT);
  pinMode(D, OUTPUT);
  pinMode(E, OUTPUT);
  pinMode(F, OUTPUT);
  pinMode(G, OUTPUT);
  
  
  pinMode(A1, OUTPUT);
  pinMode(A2, OUTPUT); // analog IOs control digits of display
  pinMode(A3, OUTPUT);
  pinMode(A4, OUTPUT);
}

void loop()
{
  digitalWrite(A4, HIGH);  // executing the countdown
  seconds_countdown();
}

Spend a little time studying about C arrays and then think about how they might be used to simplify your code.