private final void removeFirst() {
		if (this.head == this.tail) {
			return;
		}
		if (length() == 1) {
			this.head = StringBuilder.PATTERN_SIZE;
			this.tail = StringBuilder.PATTERN_SIZE;
			return;
		}
		if (++this.head == this.content[this.cIdx].length) {
			this.head = 0;
		}
	}