def pos_split_list(chr_list):
    """
    Gets position info from chr_list.
    Args:
        chr_list (list): list of chr info with position
    Returns:
        pos_list (list): list with position info
    """
    pos_list = []
    for pos in chr_list:
        if '+' in pos[1]:
            for_pos = pos[1].split('+')
            pos_list.append(for_pos)
        if '-' in pos[1]:
            rev_pos = pos[1].split('-')
            pos_list.append(rev_pos)
    return pos_list
