3 relays, 2 pushbuttons.

#define RELAY1 4
#define RELAY2 5
#define RELAY3 6
#define PUSHBUTTON1 7
#define PUSHBUTTON2 8

int relay1_state = LOW;
int relay2_state = LOW;
int relay3_state = LOW;

void setup() {
  // put your setup code here, to run once:
  pinMode(RELAY1, OUTPUT);
  pinMode(RELAY2, OUTPUT);
  pinMode(RELAY3, OUTPUT);
  pinMode(PUSHBUTTON1, INPUT);
  pinMode(PUSHBUTTON2, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  relay1_state = digitalRead(PUSHBUTTON1);
  relay2_state = digitalRead(PUSHBUTTON2);
  relay3_state = digitalRead(PUSHBUTTON2);

  digitalWrite(RELAY1, relay1_state);
  digitalWrite(RELAY2, relay2_state);