def _parse_force_block(lines):
    """
    Parse the block of total forces from the OUTCAR file

    :param lines: A list of lines containing lines including the TOTAL-FORCE block

    :returns: A tuple of position and forces
    """
    forces = []
    positions = []
    istart = len(lines)
    for idx, line in enumerate(lines):
        if 'TOTAL-FORCE (eV/Angst)' in line:
            istart = idx
        elif idx > istart + 1:
            if not line.startswith(' -----'):  # Still in the block
                values = list(map(float, line.split()))
                positions.append(values[:3])
                forces.append(values[3:])
            else:
                # Reached the end of the block
                break
    return positions, forces