How to save cat!

I have got the strange key i have done the right code with the flags and i still have a bone gate that i cant seem to open have tryed to look on catacomber.com but was unsuccesful
Please help
Please help
The forum for all Redshift games.
http://www.linux.redshift.hu/forums/
http://www.linux.redshift.hu/forums/viewtopic.php?f=12&t=982