Of course they do. If they do a deal with FF both will be focussed on the best time to pull the rug from under the other hence the erm concludes that FF/FG is most likely. If they want stability they'll bring in the Greens. If they just want a year or two to [sorry Borris - I know he's an avid reader, without the erm's free advice he'd be nothing] get Brexit done they'll muddle through with the gene pool plus one or two independents who'll never see whatever is promised. The latter could be dangerous though, SF popularity will grow in opposition and a year or two is long enough to retire the clinched fist brigade without offending anyone.