The phrase "as should bes" may seem confusing in terms of spelling, but it is actually phonetically straightforward when broken down. The "as" is pronounced with a short vowel sound, represented as /æ/, while "should" is pronounced with a long vowel sound, represented as /ʊ/. The tricky part is the word "bes", which is a contraction of "be" and "is". It is pronounced with a short vowel sound (represented as /ɛ/) followed by a voiced "z" sound. So, the pronunciation of "as should bes" would be /æz ʃʊd bɛz/.