LED Ring

void setup() {
}
void loop()
{
int myPins[] = {12,8,2,4,7};
int TimeDelay = 100;
int x = 0;
int y = 0;
int z = 0;
for(; x < 5; x++)
{
delay(TimeDelay);
digitalWrite(myPins[x],HIGH);
delay(TimeDelay);
digitalWrite(myPins[x],LOW);
}
for(; y < 5; y++)
{
delay(TimeDelay);
digitalWrite(myPins[y],HIGH);
delay(TimeDelay);
}
for(; z < 5; z++)
{
delay(TimeDelay);
digitalWrite(myPins[z],LOW);
delay(TimeDelay);
}
}