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

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

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