Example:
HBDY-AIAO-PRYU-PTT-YHO
(Note: arrange it like stack and read by column from top to bottom)
Stack form:
HBDY
AIAO
PRYU
PTT
YHO
Answer = HAPPY BIRTHDAY TO YOU
CAESAR'S BOX
Example:
HBDY-AIAO-PRYU-PTT-YHO
(Note: arrange it like stack and read by column from top to bottom)
Stack form:
HBDY
AIAO
PRYU
PTT
YHO
Answer = HAPPY BIRTHDAY TO YOU