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

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

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