private ArrayList<String> getTransitionsInputArray(String commaSeparatedInput) {
        ArrayList<String> newArray = new ArrayList<String>(commaSeparatedInput.length());
        for(int i=0; i<commaSeparatedInput.length(); i++) {
            String c = commaSeparatedInput.substring(i, i+1);
            if(c.equals(","))
                continue;
            newArray.add(c);
        }
        return newArray;
    }