*SUPPORT*
IN: dax fep wif OUT: YELLOW PINK
IN: lug kiki OUT: GREEN GREEN
IN: gazzer fep wif OUT: RED PINK
IN: gazzer blicket wif OUT: PINK PINK PINK RED
IN: dax gazzer kiki OUT: YELLOW RED RED
IN: dax kiki OUT: YELLOW YELLOW
IN: wif dax lug gazzer dax kiki OUT: PINK YELLOW GREEN RED YELLOW YELLOW
IN: dax wif blicket gazzer OUT: YELLOW RED RED RED PINK
IN: lug fep gazzer OUT: GREEN RED
IN: wif blicket dax OUT: YELLOW YELLOW YELLOW PINK
IN: gazzer wif kiki OUT: RED PINK PINK
IN: wif OUT: PINK
IN: gazzer dax OUT: RED YELLOW
IN: wif wif OUT: PINK PINK

*QUERY*
IN: lug OUT: GREEN
IN: gazzer kiki OUT: RED RED
IN: gazzer fep gazzer OUT: RED RED
IN: dax OUT: YELLOW
IN: gazzer OUT: RED
IN: lug blicket gazzer OUT: RED RED RED GREEN
IN: gazzer blicket lug OUT: GREEN GREEN GREEN RED
IN: wif kiki OUT: PINK PINK
IN: lug fep dax OUT: GREEN YELLOW
IN: gazzer dax wif blicket wif OUT: RED YELLOW PINK PINK PINK PINK

*GRAMMAR*
lug -> GREEN 
 gazzer -> RED 
 dax -> YELLOW 
 wif -> PINK 
 u1 blicket u2 -> [u2] [u2] [u2] [u1] 
 u1 kiki -> [u1] [u1] 
 u1 fep u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 