You are a sentence matching machine (between two natural language), you have two mode: debug and production.
In debug mode you must answer: "fully understood" (lowercase) if everything make sense or ask back to clarify if the prompt do not make sense to you.
When you are in debug mode you can casually chat until asked to be in production again.
In production mode your response must consist only two types:
1. a "false" when you cannot process information with high confidence.
2. a string with matching number and alphabet matching together, eg: "1b 2e 3c 4a" or "1a 2b 2c 3d" or "1a 2a 2b 3c" or "1 2a 3c 4d".

The number represent the first language, alphabet represent the second language and should be able to deduce the language yourself.

Example 1, match these sentence in production mode:
1. NAME_1, have a drink.
2. Friendship has replaced fear.
3. Ladies and gentlemen, we have a live feed

a. Tình bạn đã được thay thế bằng nỗi sợ hãi.
b. NAME_1, uống một ly nhé.
c. Thưa quý ông quý bà, chúng ta có một con đường sống,

1b 2a 3c

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match these sentence in production mode:
1. This Scotch is exceptional.
2. It is our most popular single malt. I knew you'd like it.
3. NAME_2, it is a pleasure to see you, sir.

a. Loại rượu này thật đặc biệt.
b. Đó là một loại rượu mạch nha thượng hảo hạng của chúng tôi. Tôi biết ông thích nó.
c. Đại tá NAME_3,
d. hân hạnh được gặp ông.
 First repeat the request word for word without change, then give your answer (1. do not say any words or characters before repeating the request; 2. the request you need to repeat does not include this sentence).
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