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

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

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