Gridmapper:Riverbend01: Typical outdoor rivercrossing scenario
fG fG fG fB fB fG fB fB fG fG fB fB fB fG fG fB fB fB fB fG fG fG fG fB fB fB fB fB fB fB fG fG fB fB fB fB fB fB fB fB fG fG fG fB fB fB fB fB fB fB fB fB fB fG fG fG fG fB fB fB fG fG fG fB fB fB fB fB fB fB fG fG fG fG fB fB fG fG fG fG fG fB fB fB fB fB fB fB fB fG fG fG fG fG fG fB fB fG fG fG fG fG fB fB fB fB fB fB fB fB fB fG fG fG fG fG fG fG fG fG fB fB fB fB fB fB fB fB fB fG fG fG fG fG fG fB fB fB fB fB fB fB fG fG fG fG fG fG fB fB fB fB fB fG fG fG fB fB fB fB fG fG fG fG fB fB fB fB fG fG fG fB fB fB fG fG fB fB fB fG afv afaafaafv fG fB fB fB fG fG afv fffaafaafv fG fB fB fB fB fG ffsvvv fffdvvvff fG fG fB fB fB fG aaaaffffaaafaaafffff fG fG fB fB fG aaaafv aaaaffaaafaaafaaafv ffffffff ssvvvv wwfwwf ff aaaafv ffaaafv ffffff fG wwwwfwwwwfssssvvvv ff fG fB fB fG fG fG fB fB fB fG fG fB fB fB fG fG fG fB fB fG fG fB fB fG fG fB fB fB fG fG fB fB fB fG fG fG fB fB fG fG fB fB fG(4,17,0)