As far as I know, there are no words in the English language that start with the aforementioned letters.
Or, are there…?
My unabridged dictionary has several: bepaint, bepaper, bepatched, bepicture, beplaster, bepowder, bepraise, bepranked, bepuffed, bepuzzle, bepuzzlement.
Beplumed
“Furnished with feathers” (Shorter OED)
Well, of course, I meant to say, words in the English language that any of us has ever used in a sentence.
Sheesh!
“His costume for the play was beplumed as if he were a human peacock”
[hijack]
When I was in elementary school, our spelling teacher would ask us to spell a word and then ask us to put that word in a sentence. If I didn’t know the word, I"d use the following sentence,
“I do not know what the word beplumed means.”
I would only ever use this sentence about once per year and the teachers always got a kick out ot it.
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When I read this thread, the above came to mind and I had to share…
Anyone else read Up the Down Staircase?
“Bring in own sentences illustr. vocab. words:
enigmatic—She was very enigmatic.
vindictive—She was very vindictive.
vacillating—She was very vacillating.”
She was very bepuzzled. There. Happy, pappy? 
Just a bit off topic, but there is former Boston Bruin player, and later coach, Bep Guidolin. Of course that is just a nickname, his given name is really Armand but I would guess that his mother was the only person to call him that.
bephallus - to furnish with a penis.
“It took my wife a few minutes to fix the buckle of her strap-on, but once she was properly bephallused, we were ready to begin the party.”
Can we count things Buh’wheet said?
Isn’t “bep” the sound effect used in Pong?
Bepiss - to wet with urine
Well, it’s probably an archaic term (Richard Burton used it in Arabian Nights), but I think we oughta revive it!
Isn’t bepgry the third word everyone’s been asking about?
bephuddled?
In spelling bees I participated in in grade school, you were allowed to ask the teacher giving the word to either define the word or use it in a sentence before you had to spell it. I was such a little prick back then – I used to love to hang the teachers out to dry and ask them to use some crazy words in sentences, even though I already knew exactly how to spell the word.
bepble.
It means little stones that dyslexics find on beaches.
How does one get Fantastic Foods Big Soup Noodle Bowl, Mandarin Broccoli flavor, out of one’s own nose?
There’s an X-ray satellite called BeppoSAX. It’s named after Italian astronomer Giuseppe “Beppo” Occhialini. It’s unlikely that any non-astronomer would use it, though.