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

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

*GRAMMAR*
wif -> BLUE 
 dax -> GREEN 
 zup -> YELLOW 
 fep -> PURPLE 
 x1 lug x2 -> [x1] [x2] 
 x1 tufa x2 -> [x2] [x1] [x2] 
 x1 kiki -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 