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

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

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