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

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

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