Here's a short story:

If you and your friends wish to share a secret, you can write it in code, and no one else will be able to read it. Codes are one way of writing in secret. Ciphers are another. In a code each word is written as a secret code word or a code number. In a cipher each letter is changed. 

Codes and ciphers have played an important role in the history of the world. Julius Caesar, the Roman ruler who defeated almost all the countries in Europe about 2,000 years ago, used a cipher when he sent secret messages to his troops. During the American Revolution, George Washington's spies used a kind of code to send his information about the enemy before his military action. In World War II, the Americans"broke"or figured out Japan's most important navy codes and got enough information to destroy a powerful Japanese fleet. 

Storekeepers use codes to mark their goods. The codes show how much is paid for the goods or when they are added to the stock. Businessmen use codes to hide plans from their business enemies. Sometimes personal letters or diaries are written in code. Many people enjoy figuring out codes and ciphers simply as a hobby. 

In the 16th century, codes and ciphers were very popular among scientists. They wrote messages to each other in code so that no one else would learn their secrets. Geronimo Gardano, an Italian astrologer , mathematician, and doctor, invented the trellis cipher. He took two sheets of paper and cut exactly the same holes in each one. Then he sent one sheet, which he called a trellis, to a friend and kept the other for himself. Whenever he wanted to write a message, he put his trellis over a clean sheet of paper and wrote the secret message through the holes. There he removed the trellis and filled the rest of the paper with words that would make sense. When his friend received it, he put his trellis over the writing and read the secret message. (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: How can you and your friends share a secret?
Guess: in a code or a cipher
Confidence: <appropriate level of confidence in this guess>

Question: In a code how is each word written?
Guess: as a secret code word
Confidence: <appropriate level of confidence in this guess>

Question: What is done in a cipher?
Guess: In a cipher each letter is changed.
Confidence: <appropriate level of confidence in this guess>

Question: Have codes and ciphers been important in history?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: What Roman used a cipher to send messages to his troops?
Guess: Julius Caesa
Confidence: <appropriate level of confidence in this guess>

Question: Whose spies used code during the American Revolution?
Guess: George Washington's
Confidence: <appropriate level of confidence in this guess>

Question: What did the Americans do to Japan's code in Word War II?
Guess: they broke them
Confidence: <appropriate level of confidence in this guess>

Question: After breaking the code what were they able to do?
Guess: they  got enough information to destroy a powerful Japanese fleet.
Confidence: <appropriate level of confidence in this guess>

Question: What do storekeepers use codes for?
Guess: to mark their goods
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: What do those codes show about payment?

how much is paid for the goods