On the Subject of Aiding Adjacent Letters

UP, down, left, right, UP, down, left, right...!

NOTE: Letters in the highlighted column have an adjacency match with the letter being searched. Therefore, when checking a letter, if an adjacent letter is in a corresponding highlighted column, then that adjacent letter should be selected.

Key Key
A GJMOY EGKRS HKPRW FLNVX N PQRSV GPVWZ AFGHL IQRUX
B IKLRT CJSXY CDFYZ LMQRU O HJLUZ ADIPQ IQSTX GJKRX
C BHIJW EFGQY DEMTU BDPTZ P DMNOX DKLNQ CFHKR AFHMZ
D IKOPQ IPVWX CJTUW BCHKQ Q CEOPV DJMNS BDIKN FGOVW
E ACGIJ FMQRS KSUWZ CIJVY R AEGSU BFHNZ BNOXY AKLPW
F CERVY GKUWX AGJPQ BIMNP S ABEKQ GNRYZ GMVYZ EHJOT
G ACFNS AELRT HOQYZ FNSWY T GVXYZ BHJLM CJLSU CDOWY
H LRTUX COVWY DKMPS AGJNP U FMVXZ HJORY BILNY CDEIT
I DLOWZ BCDEM EFNUV JKOQU V DHMNW FNQTU AEJQX ILSXZ
J BQTUW ACEOZ EHIOS DFTVX W DFHMN CIJVX GLQRT ADEMY
K AFPXY BDLSX DIORZ AEHPQ X BDFKW HKPTU AJNOV LMORV
L GKPTZ BHIMO ABRVX NTUWZ Y BCHSU AFKTZ EGMTW BGRSU
M EILQT APUVW BFPWX CHSYZ Z JNRSY ILOTU CLMPV BEGKS