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

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

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