يفك الفريق الشفرة بدون الرمز السري.

Because Arabic often prefers verb–subject–object word order, especially in straightforward statements.

So يفك الفريق الشفرة is a very natural pattern:

• يفك = decodes / cracks
• الفريق = the team
• الشفرة = the code/cipher

You could also say الفريق يفك الشفرة بدون الرمز السري. That is also correct, but it puts a little more emphasis on the team.

يفك is the imperfect form, third person, masculine, singular.

From this one form, Arabic can express several ideas depending on context:

• he decodes
• it decodes
• he is decoding
• sometimes even he will decode

Here, because the subject is الفريق and there is no extra context, it is most naturally understood as a present-time statement: the team decodes / is decoding.

The fully vocalized form is يَفُكُّ.

It comes from the root ف-ك-ك, which has a basic sense of:

• loosening
• untying
• undoing
• taking apart

So the verb فكّ can literally mean things like to untie or to loosen.

By extension, Arabic uses it for ideas like:

• solving
• cracking
• decoding

So يفك الشفرة is a very natural Arabic expression for decoding or cracking the code.

Because الفريق is grammatically a singular noun in Arabic, even though it refers to a group of people.

So Arabic treats it like:

• the team = one unit

That is why the verb is singular:

• يفك الفريق = the team decodes

This is similar to English, where team is also grammatically singular in many contexts.

الشفرة is the direct object of the verb يفك.

In other words, it is the thing being decoded:

• يفك = decodes
• الشفرة = the code/cipher

In fully vowelled Arabic, it would be in the accusative case:

• الشفرةَ

But in normal Arabic writing, those short case endings are usually not written, so learners mostly identify the object by:

• position in the sentence
• context
• meaning

Yes, that is a very common source of confusion.

In this sentence, the two words point to different things:

• الشفرة = the code/cipher that is being decoded
• الرمز السري = the secret code, secret symbol, passcode, or key used to access or understand something

So English might use code for both, but Arabic distinguishes them more clearly here.

A simple way to think about it:

• الشفرة = the thing to be cracked
• الرمز السري = the secret key or secret code you would normally use to do it

Because in Arabic, adjectives usually come after the noun they describe.

So:

• الرمز = the code/symbol
• السري = secret

Together:

• الرمز السري = the secret code

Also, the adjective must agree with the noun in:

• definiteness
• gender
• number
• case

That is why both words have ال:

• الرمز السري = the secret code
• not الرمز سري in standard grammar

If the phrase were indefinite, it would be:

• رمز سري = a secret code

بدون means without.

In Modern Standard Arabic, it functions like a preposition-like expression, and the noun after it is treated as genitive.

So in fully vowelled Arabic, you would have:

• بدونِ الرمزِ السريِّ

That means:

• without the secret code

A very common alternative is من دون, which also means without.

Because normal Arabic writing usually leaves out short vowels and case endings.

So learners see:

• يفك الفريق الشفرة بدون الرمز السري

But a more fully marked version would be:

• يفكُّ الفريقُ الشفرةَ بدونِ الرمزِ السريِّ

Those endings show the grammar more clearly:

• الفريقُ = subject
• الشفرةَ = direct object
• الرمزِ = after بدون, so genitive
• السريِّ = adjective matching الرمزِ

In most real-world writing, native readers understand this without the written endings.

The spelling stays ال every time, but the pronunciation changes depending on the next letter.

In this sentence:

• الفريق: the ل is pronounced normally, because ف is a moon letter
• الشفرة: the ل assimilates, because ش is a sun letter
• الرمز: the ل assimilates, because ر is a sun letter
• السري: the ل assimilates, because س is a sun letter

So you hear something like:

• al-farīq
• ash-shifra
• ar-ramz
• as-sirrī

This is a pronunciation change only. The spelling still uses ال.

Yes, absolutely.

Both are correct:

• يفك الفريق الشفرة بدون الرمز السري
• الفريق يفك الشفرة بدون الرمز السري

The difference is mainly one of style and emphasis:

• يفك الفريق... is a very natural verbal sentence
• الفريق يفك... highlights the subject a little more

So as a learner, you should understand both patterns.