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

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

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