Row
Take your yakuza knife and put it in a row with the others.
You have a yakuza knife. There are a bunch there, all in a row, so you follow suit by putting yours in the row too.
れつ
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None
Should we put them in a row? Let's (れつ) put them in a row!
Imagine a bunch of yakuza being enthusiastic about putting their knives in a row. They all say together "Ret's do it!"