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

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

*GRAMMAR*
dax -> PURPLE 
 wif -> BLUE 
 zup -> RED 
 fep -> GREEN 
 x1 blicket u1 -> [u1] [x1] 
 x1 kiki x2 -> [x1] [x2] [x2] 
 u1 lug u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 