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

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

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