static int[][] offsetConjFromConfig(String offset_conjunctions) {
		int[][] conjunctions;

		// to find round brackets with digits sperated with whitespaces
		Pattern inBrackets = Pattern.compile("\\([-\\d\\s,]+\\)");
		Matcher bracketMatcher = inBrackets.matcher(offset_conjunctions);

		ArrayList<String> bracketContents = new ArrayList<String>();
		int bracketStart, bracketEnd;
		int pos = 0;

		// get all brackets and write their content in the ArrayList
		while (bracketMatcher.find(pos)) {
			bracketStart = bracketMatcher.start() + 1;
			bracketEnd = bracketMatcher.end() - 1;
			bracketContents.add(offset_conjunctions.substring(bracketStart,
					bracketEnd));
			pos = bracketMatcher.end();
		}
		// create an array for each bracket and fill it with the digits in the
		// bracket
		conjunctions = new int[bracketContents.size()][];
		for (int i = 0; i < bracketContents.size(); i++) {
			String[] digits = bracketContents.get(i).split(",");
			conjunctions[i] = new int[digits.length]; // array creation
			for (int j = 0; j < digits.length; j++) {
				conjunctions[i][j] = Integer.parseInt(digits[j].trim()); // filling
			}
		}
		return conjunctions;
	}