The pairs of letters inserted into each of this puzzle's theme answers, for example

Question:

Answer:

FASHIONMONOGRAM

Length:

Similar Crossword Questions:

"Home work" letters that appear at both ends of this puzzle's theme answers
Shade from the sun that's inserted in this puzzle's theme answers
Second letters of this puzzle's five theme answers (seen in order)
Letters for the names "buried" in this puzzle's theme answers
1997 Kevin Kline film, and a hint to the puzzle theme hidden in four answers
What the self-contradictory words found in this puzzle's theme answers are examples of
Big letters, for short (and what your answers must be written in to understand the theme)
"Something you would cheat on if you knew you wouldn't get caught." "___" (also, the source of this puzzle's theme answers)
What this puzzle's theme answers contain (if you look closely enough)
Equipment for each of this puzzle's theme answers
Tip, and a hint to this puzzle's theme found in five answers
Nanobot's hypothetical ability, and the process that's overtaken this puzzle's theme answers
Bit of footwear that appears at both ends of this puzzle's theme answers
Weather Channel feature (it's the puzzle theme found in a quintet of answers)
Second of a pair of letters swapped six times in this puzzle's theme entries
Grate, with "get," or what this puzzle's theme answers get
String of letters found in this puzzle's longest Across answers
Some film credits, and the idea behind the eight theme answers in this puzzle
Each of the four longest puzzle answers has two pairs of them
Finding from the "fifths" taken from this puzzle's theme answers
Postseason gridiron game, and a hint to the puzzle theme found in starred answers
"The wart stops here" product, and a hint to the theme found in eight puzzle answers
What one must have to solve this puzzle's theme answers
Reservoir, and hint to puzzle theme found in seven long answers
Struck out, as one letter in each of this puzzle's theme answers