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

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

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