My heart tells me Ices>Iceo>Icbo.
My engineering evil tells "base on what, did you come up to above conclusion?"
To me floating emitter is no delivering carriers to collector, so only small base area via small contact on a "side of npn structure" (red path) deliver carriers.
When emitter is connected to base, a total area capable of deliver carriers is much larger (green path), isn't it (mentioned above diode)?.
Is it like I think or is it large simplification?