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

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

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