If they're not possessive, that means they're plurals, which means only the last set is correct. Rhonda Rhonda Bracey rhonda.bracey@xxxxxxxxxxxxxxxx http://www.cybertext.com.au <http://www.cybertext.com.au/> AuthorIT Certified Consultant ________________________________ From: austechwriter-bounce@xxxxxxxxxxxxx [mailto:austechwriter-bounce@xxxxxxxxxxxxx] On Behalf Of MHT Sent: Tuesday, 15 January 2008 4:45 AM To: austechwriter@xxxxxxxxxxxxx Subject: atw: in's or ins' or ins Greeting all, Which is correct (non-possessive): Check-up's Check-in's Built-in's Plug-in's Drop-in's Punch-in's or Check-ups' Check-ins' Built-ins' Plug-ins' Drop-ins' Punch-ins' or Check-ups Check-ins Built-ins Plug-ins Drop-ins Punch-ins Kind Regards, MHT