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

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

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