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

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

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