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

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

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