I'm proud of my solution for the philosopher stone, I try to make the most symetrical system:
c,11,3;c,3,3;b,12,5;b,1,5;b,12,9;b,7,7;b,1,9;b,6,9;c,4,11;c,10,11;m,13,3,270,1,wwcrrowwwwll;m,11,1,0,1,cruuoddlwwww;m,3,1,180,1,cluuoddrwwww;m,1,3,270,1,wwcllorrwwww;m,9,5,0,1,wwwwcuodwwww;m,5,5,180,1,wwwwcuodwwww;m,10,13,0,2,cdloruwwwwww;m,4,13,180,2,cdroluwwwwww;m,10,9,90,1,wwwclorwwwww;m,4,9,90,1,wwwcrolwwwww;m,13,11,90,1,wwcllww11orr;m,1,11,90,1,wwcrrww22oll;m,12,7,90,1,llwwwwcl1l2o;m,2,7,90,1,rrwwwwcr1r1o;m,10,8,0,1,c1l1lorrwwww;m,4,8,180,1,cll21ollwwww;m,7,5,270,1,11uuoddrrcrr;
 "The Codex of Alchemical Engineering"){kind=icon}