*SUPPORT*
IN: lug OUT: PINK
IN: zup fep kiki OUT: GREEN RED RED
IN: zup fep lug tufa OUT: PINK RED RED PINK RED RED
IN: wif kiki lug gazzer OUT: YELLOW GREEN PINK PINK
IN: lug kiki wif fep kiki OUT: PINK GREEN GREEN YELLOW YELLOW
IN: zup lug lug fep lug OUT: RED PINK PINK PINK PINK
IN: lug fep kiki OUT: GREEN PINK PINK
IN: kiki zup tufa OUT: GREEN RED GREEN RED
IN: zup kiki gazzer tufa OUT: RED GREEN GREEN RED GREEN GREEN
IN: kiki gazzer OUT: GREEN GREEN
IN: kiki fep wif OUT: YELLOW GREEN GREEN
IN: zup fep wif OUT: YELLOW RED RED
IN: wif tufa OUT: YELLOW YELLOW
IN: wif gazzer OUT: YELLOW YELLOW

*QUERY*
IN: lug lug gazzer OUT: PINK PINK PINK
IN: kiki fep zup OUT: RED GREEN GREEN
IN: wif fep lug OUT: PINK YELLOW YELLOW
IN: lug gazzer OUT: PINK PINK
IN: wif OUT: YELLOW
IN: zup gazzer OUT: RED RED
IN: wif kiki fep wif tufa OUT: YELLOW YELLOW GREEN GREEN YELLOW YELLOW GREEN GREEN
IN: kiki fep lug OUT: PINK GREEN GREEN
IN: kiki OUT: GREEN
IN: lug fep zup OUT: RED PINK PINK

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