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

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

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