=CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))&CHOOSE(RANDBETWEEN(1,3),CHAR(RANDBETWEEN(65,90)),CHAR(RANDBETWEEN(97,122)),RANDBETWEEN(2,9))
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