*SUPPORT*
IN: wif kiki lug OUT: YELLOW RED RED
IN: dax wif lug blicket OUT: GREEN YELLOW YELLOW GREEN YELLOW YELLOW
IN: fep kiki zup wif OUT: PURPLE YELLOW RED
IN: fep zup kiki OUT: RED PURPLE
IN: dax dax wif dax zup kiki OUT: GREEN GREEN YELLOW RED GREEN
IN: kiki zup dax OUT: GREEN RED
IN: kiki zup fep blicket OUT: PURPLE RED PURPLE RED
IN: dax lug OUT: GREEN GREEN
IN: fep zup wif OUT: YELLOW PURPLE
IN: dax dax blicket OUT: GREEN GREEN GREEN GREEN
IN: kiki lug OUT: RED RED
IN: wif dax dax OUT: YELLOW GREEN GREEN
IN: dax zup fep blicket OUT: PURPLE GREEN PURPLE GREEN
IN: fep dax zup wif OUT: PURPLE YELLOW GREEN

*QUERY*
IN: dax OUT: GREEN
IN: kiki wif fep wif zup wif OUT: RED YELLOW PURPLE YELLOW YELLOW
IN: fep lug OUT: PURPLE PURPLE
IN: kiki OUT: RED
IN: wif OUT: YELLOW
IN: dax zup dax blicket OUT: GREEN GREEN GREEN GREEN
IN: wif lug OUT: YELLOW YELLOW
IN: wif kiki lug blicket OUT: YELLOW RED RED YELLOW RED RED
IN: fep OUT: PURPLE
IN: wif zup fep OUT: PURPLE YELLOW

*GRAMMAR*
wif -> YELLOW 
 dax -> GREEN 
 kiki -> RED 
 fep -> PURPLE 
 u1 zup u2 -> [u2] [u1] 
 x1 blicket -> [x1] [x1] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 