Help?!? Which one is Jimin and which one is Jin?!?!

ok so today I got a new case for my phone and it has this picture on the cover friend and I are big fans of bts but we have one problem...we are arguing over which member is which we can not decide which one is Jimin and which one is Jin but we doo agree on the other members...can u guys please help us solve our question? p.s. I know I shouldn't have doubts on who's who but I do please help army's....

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