Support for preceding 'previous' modifiers

[svehlada]

Hello,

there is currently no support for preceding 'previous' modifiers used in some slavic languages, but afaik also German and Spanish...
To explain what I mean: In Czech, to say eg 4 hours ago, we say před 4 hodinami, in German they say vor 4 Stunden etc. - the modifier precedes the time.

Is there a simple way to implement a change like this at the moment?
Thank you!