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

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

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