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

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

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