There are no English Scrabble words that meet the criteria, even when repeating the letters.
2-letter wordsbe, by, ye3-letter wordsbey, buy, bye6 words found.
wdfgvhjkl
halest, haslet, palest, haplite, haplites
boulster
enjoyment
mellow
Hoe, or Hi
Beta
A. Science
learn
There are no words that contain all of those letters.