Wherefore art thou, aberil?

[ReneZ]

In Dutch the sequence 'rkt' is often pronounced with an added schwa, ie. 'markt' (market) is pronounced [ˈ'mɑ.rəkt].

Correct ;-) and by Dutch people for that matter. This is true more generally for 'rk' and 'lk':

Written 'kerk' -> spoken 'kerrek' (church).
Written 'melk' -> spoken 'mellek' (milk).
This is considered incorrect though and newsreader typically would not to that. This may have changed in  modern TV times. 

Now 'br' and its cousins pr, pl, bl, are easier to pronouce for a much greater group of people.
Interesingly of course Portuguese does not like the 'l' here and puts the 'r' instead.

They are a bit more tricky for East Asian people, even though these particular combinations are quite common in Thai. In certain parts of the country, the 'l' and 'r' are simply dropped though, when speaking. This causes numerous 'collisions' but people tend not to be confused. I am not so fortunate there....

Anyway. Having the 'b' in April is already not common, so for me it is worth it to continue the search.