Dec 21, 2020 · In Monday's puzzle, 27-Across read [Greek letter X], which was either a gimme or a "Now, which one is that again..?" for most solvers. CHI it was, but it is tough to keep track sometimes.Four of the 24 letters of the Greek alphabet don't appear in standard crosswords because they're too short (MU, NU, PI, XI), while others are too long to pop up more than occasionally (OMICRON, EPSILON ... ‘Celebrity Big Brother' Star Alicia Douvall Reveals Parts Of Her Breasts Are Made From Pig's Skin (Oh, And She's Only Just Learned The Alphabet) 1 / 17 'Celebrity Big Brother' Winners