$($Skytale$,10$pt$)$ You know that the ciphertext

$"$ TNETE AHKCW MDRER OAEEE OREPT FECAI TDASF HE$"$

was encrypted using a Skytale transposition with $7$ columns.

a$)2pt$ How many long columns are there?

b$)2pt$ How many rows are there?

c$)[6$pt$]$ Find the plaintext. Note: include the filled out row$/$column display, as well as the

final plaintext $($with word separations$).$