int g = 10;
int r = 11;
int o = 12;
int p = 13;
int bg = 6;
int br = 7;
int bo = 8;
int bp = 9;
int bsg = 1;
int bsr = 1;
int bso = 1;
int bsp = 1;
int gval = 0;
int rval = 0;
int oval = 0;
int pval = 0;

void setup() {
  pinMode(g, OUTPUT);
  pinMode(r, OUTPUT);
  pinMode(o, OUTPUT);
  pinMode(p, OUTPUT);
  pinMode(bg, INPUT_PULLUP);
  pinMode(br, INPUT_PULLUP);
  pinMode(bo, INPUT_PULLUP);
  pinMode(bp, INPUT_PULLUP);
}

void loop() {
  bsg = digitalRead(bg);
  bsr = digitalRead(br);
  bso = digitalRead(bo);
  bsp = digitalRead(bp);
  digitalWrite(g, gval);
  digitalWrite(r, rval);
  digitalWrite(o, oval);
  digitalWrite(p, pval);
  if (bsg == LOW){
    gval = 1;
    rval = 0;
    oval = 0;
    pval = 0;
  }
  if (bsp == LOW){
    gval = 0;
    rval = 0;
    oval = 0;
    pval = 1;
  }
  if (bsr == LOW || rval == 1){
    gval = 0;
    rval = 0;
    oval = 0;
    pval = 0;
    digitalWrite(g, gval);
    digitalWrite(o, rval);
    digitalWrite(p, pval);
    digitalWrite(r, rval);
    delay(250);
    rval = 1;
    digitalWrite(r, rval);
    delay(250);
  }
  if (bso == LOW || oval == 1){
    gval = 0;
    rval = 0;
    oval = 0;
    pval = 0;
    digitalWrite(g, gval);
    digitalWrite(r, rval);
    digitalWrite(p, pval);
    digitalWrite(o, oval);
    delay(1000);
    oval = 1;
    digitalWrite(o, oval);
    delay(1000);
  }
}