Abrupt
Abut
Aunt
Baku
Bank
Bark
Barn
Bran
Brat
Brunt
Brut
Bunk
Bunt
Burn
Burp
Kaput
Knap
Knar
Nark
Pant
Park
Part
Prank
Punk
Punt
Raku
Rank
Rant
Rapt
Tank
Tarn
Tarp
Trap
Trunk
Tuba
Tuna
Turban
Turk
Turn
Unapt
Unbar
Urban