Nollie bigspin, or nollie bigspin heel back noseblunt down a rail
Nollie varial flip switch front smith down a rail. Berrics handrail would be acceptable
This would no doubt require unbridled technical precision, but you know that shits possible with the way dudes have their flippity tricks on point.
Inward heel front board down a rail. Assuming it's been done, but I'm just envisioning it looking really good in my head if it were done by someone like Herman.
Switch 180 front feeble down a rail.
Back 180 switch back feeble down a rail. Holy shit that would be nuts.