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

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

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