public boolean isInLang(String s) {
char[] list = new char[] {'a', 'b'};
if (LemmaMath.otherCharactersFound(s, list)) return false;
if (!s.startsWith("bbbbb")) return false;
int a, b;
String temp = s.substring(5);
a = LemmaMath.countInstances(temp, 'a');
b = LemmaMath.countInstances(temp, 'b');
if (2 * a == 3 * b) return true;
return false;
}
public void chooseI() {
i = LemmaMath.flipCoin();
}