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

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

*GRAMMAR*
dax -> YELLOW 
 kiki -> GREEN 
 zup -> RED 
 fep -> PINK 
 x1 tufa x2 -> [x2] [x1] 
 u1 wif u2 -> [u1] [u2] [u1] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 