How to say don't worry it's a common mistake in Japanese
1)
心配心配(shinpai) (adj-na,n,vs) worry/concern/anxiety/care/help/aid/assistanceするする(suru) (vs-i) to do/to cause to become/to make/to turn/to serve as/to act as/to work as/to wear/to judge as being/to view as being/to think of as/to treat as/to use as/to decide on/to choose/ to be sensed/to be/to be worth/to cost/to pasなな(na) (prt) connects adj to noun/indicates emotion or emphasis/command/prohibitionよくあるよくある(yokuaru) (exp,v5r-i) is often the case間違い間違い(machigai) (n) mistake/error/blunder/accident/mishap/trouble/improper conduct/indiscretionだからだから(dakara) (conj,n) so/therefore
