On: Arabic characters found woven into burial costumes...

[d--b]

Thanks, I just googled this. Apparently it's Khaganate rather than Khanagate.

[posterboy → d--b]

With old names it might be both, I guess, depending on who you ask.

I wonder, has khan any to do with Kahn (ger. ship).

[kingofpandora → posterboy]

It doesn't. "kh" should be read as a single sound (Arabic or Persian خ) not a sequence of two sounds.

[posterboy → kingofpandora]

both khan and kahn come out as british can't modulo t does, I guess, though noone knows what it sounded like originally.

[Grustaf → posterboy]

No they don't, kh is an aspirated k sound. In any case that is not what was mistyped in the original post, it was the second and third syllables that hade changed places.