We use the structure A就A，别B to indicate that a situation is not as critical as it seems. It is used to make sentences such as “if you forgot, it’s okay, don't worry”.
Instead of “A”, we should state two identical verbs or verbs with the object. Instead of “B”, we should state another verb or a verb phrase.
Just tell me and don't manipulate me
jiǎng jiù jiǎng, bié yòng zhè ge cāozòng wǒ
He just left. But it’s not a big deal, and I don’t mind it
zǒu le jiù zǒu le, bié zàiyì
Even if you write it wrong, it’s not a big deal. Don’t worry