Aphabetic letter pairs in words

YK: tyke.

YL: Carboxylic

YM: rhyme.

YN = dynamo

YO: playoff.

YO = young

YP: Cyprus

YQ = Nyquil

YR = gyrate

YS: Days

YT: myth.

YU = yucca

YV: MacGyver.

YW: jaywalking

YX: coccyx.

YY - Khmelnytskyy

YZ: Byzantine.

ZA: stanza

ZB - whizzbang

ZC: Ezcurrite (a borate mineral).