Voimme vetää vipua, kunhan symbolit ovat oikeassa järjestyksessä.

Voimme is the 1st person plural present tense of voida (to be able to / can).

So:

• voida = to be able to
• voimme = we can

The ending -mme is the normal ending for we in Finnish verbs.

So the start of the sentence, Voimme vetää..., means We can pull...

After voida, Finnish uses the 1st infinitive, which is the dictionary form of the verb.

So:

• voimme vetää = we can pull
• voin tulla = I can come
• voit nähdä = you can see

This is very similar to English can pull, can come, can see.

Vipua is the partitive singular of vipu (lever).

In Finnish, the object often appears in the partitive when the action is seen as ongoing, incomplete, or focused on the activity itself rather than a completed result.

So:

• vipu = lever (basic form)
• vipua = lever (partitive form)

With vetää, the partitive is very common when talking about physically pulling something. Here vetää vipua is the natural expression.

A learner may compare:

• vetää vipua = pull the lever / be pulling on the lever
• vetää vivun = pull the lever completely, with more focus on the result

So in this sentence, vipua is not random: it reflects normal Finnish object-case usage.

Because vipu undergoes a stem change in some forms.

The word changes like this:

• vipu = nominative
• vivun = genitive / accusative-like total object form
• vipua = partitive

This kind of consonant change is common in Finnish. Here, p becomes v in the vivun form.

So a learner may notice that the word does not keep exactly the same stem in every case.

Here kunhan means as long as, provided that, or so long as.

So:

• Voimme vetää vipua, kunhan symbolit ovat oikeassa järjestyksessä.
• We can pull the lever, as long as the symbols are in the correct order.

This is different from plain kun, which often means when.

Compare:

• kun = when
• kunhan = as long as / provided that

In other contexts, kunhan can also mean something like if only, but that is not the meaning here.

Because symbolit is plural: it means symbols.

And Finnish verbs agree with the subject in number, so:

• symboli on = the symbol is
• symbolit ovat = the symbols are

Here:

• symbolit = plural subject
• ovat = plural form of olla (to be)

So the clause literally means the symbols are...

Finnish does not have articles like a, an, and the.

So symbolit can mean simply symbols, or in context the symbols.

In this sentence, English naturally uses the symbols because the speaker and listener are probably talking about specific symbols that both know about.

So the definiteness comes from the situation, not from a separate article.

Because this phrase uses the inessive case, which often means in.

So:

• järjestys = order
• järjestyksessä = in order / in the order

And the adjective must agree with the noun, so:

• oikea = right / correct
• oikeassa järjestyksessä = in the right/correct order

This is a very typical Finnish pattern: instead of using a separate preposition like in, Finnish often puts the noun into a case ending.

Also notice vowel harmony:

• oikeassa uses -ssa
• järjestyksessä uses -ssä

They are the same case, just different vowel-harmony versions.

Yes, very much so. Olla oikeassa järjestyksessä is a common way to say to be in the correct order.

You can think of it as a natural Finnish phrase:

• Numerot ovat oikeassa järjestyksessä. = The numbers are in the correct order.
• Kirjaimet eivät ole oikeassa järjestyksessä. = The letters are not in the correct order.

So this part of the sentence is something worth learning as a chunk.

Yes. Finnish word order is fairly flexible.

This sentence could also be:

• Kunhan symbolit ovat oikeassa järjestyksessä, voimme vetää vipua.

That still means the same thing: As long as the symbols are in the correct order, we can pull the lever.

The original version puts the main clause first:

• Voimme vetää vipua... = We can pull the lever...

That makes the action come first, and the condition second.

If you put the kunhan clause first, the condition gets more emphasis.

Because kunhan symbolit ovat oikeassa järjestyksessä is a subordinate clause.

Finnish normally separates subordinate clauses with a comma in sentences like this.

So the structure is:

• main clause: Voimme vetää vipua
• subordinate clause: kunhan symbolit ovat oikeassa järjestyksessä

That is why the comma appears between them.