That first example's b-b is an immediate blatant problem, especially since h is a valid terminal. With unfamiliar words, there will also be problems with j/g/k.

That first example's b-b is an immediate blatant problem, especially since h is a valid terminal. With unfamiliar words, there will also be problems with j/g/k. b/v/f, t/d, etc. The one thing this does better than bibi is that it avoids the "E" which confuses English speakers.