private final boolean cvc(int i) {
		if (i < 2 || !cons(i) || cons(i - 1) || !cons(i - 2))
			return false;
		{
			int ch = b[i];
			if (ch == 'w' || ch == 'x' || ch == 'y')
				return false;
		}
		return true;
	}