puzzle one hundred and nine: check, check, check, and check

small puzzle today. square 19 is checked four times, so it's gotta be the easiest part of this entire puzzle. 

answers to yesterday's flats: INVADERS / DINERS DRIVE-INS AND DIVES, GMAIL / LIGMA, DIN-DIN / DINED IN, R L STINE / RSTLNE, ABCDEFGHIJKLMNOPQRSTUVWXYZ / BIG BIRD SINGS GOOD A QUIZZICAL WORD TO TEACH KIDS EVERY LETTER IT’S JUST LIKE THE TEXT I’M WRITING NOW A FLAT WHICH GOES LIKE BETTER