Aphabetic letter pairs in words

TR: quatrain

TS & TT: Tsatthoggua

TU = turducken

TV: outvote

TW: outwit

TX: Garrotxa cheese

TY: Tycoon

TZ = klutz

UA - truant

UB: scrub

UC = firetruck

UD: buddy

UE: queue

UF = muffin

UG- Ugly

UH = uhuru, bauhaus, souhaite (all of non-English origin)

UI: Guinea

UJ - Jujubes

UK: Yukon

UL: Yule