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

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

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