*SUPPORT*
IN: lug wif lug OUT: YELLOW RED YELLOW
IN: wif dax lug dax gazzer OUT: RED YELLOW GREEN
IN: lug OUT: YELLOW
IN: lug tufa kiki wif OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW RED RED
IN: wif tufa OUT: RED RED RED
IN: gazzer wif tufa OUT: GREEN RED GREEN RED GREEN RED
IN: wif lug OUT: RED YELLOW
IN: lug tufa OUT: YELLOW YELLOW YELLOW
IN: wif tufa kiki gazzer OUT: RED RED RED RED RED RED GREEN GREEN
IN: gazzer OUT: GREEN
IN: gazzer tufa dax wif OUT: GREEN GREEN GREEN RED
IN: gazzer dax fep OUT: GREEN PURPLE
IN: lug dax fep OUT: YELLOW PURPLE
IN: gazzer wif tufa dax gazzer OUT: GREEN RED GREEN RED GREEN RED GREEN

*QUERY*
IN: wif lug dax wif dax lug OUT: RED YELLOW RED YELLOW
IN: wif dax wif OUT: RED RED
IN: lug gazzer OUT: YELLOW GREEN
IN: wif OUT: RED
IN: wif wif tufa OUT: RED RED RED RED RED RED
IN: lug lug dax fep OUT: YELLOW YELLOW PURPLE
IN: fep tufa OUT: PURPLE PURPLE PURPLE
IN: fep OUT: PURPLE
IN: lug wif OUT: YELLOW RED
IN: wif fep gazzer fep fep OUT: RED PURPLE GREEN PURPLE PURPLE

*GRAMMAR*
fep -> PURPLE 
 gazzer -> GREEN 
 lug -> YELLOW 
 wif -> RED 
 x1 kiki x2 -> [x1] [x1] [x2] [x2] 
 x1 tufa -> [x1] [x1] [x1] 
 x1 dax u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 