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

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

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