*SUPPORT*
IN: tufa blicket OUT: PURPLE PURPLE
IN: fep kiki fep OUT: YELLOW YELLOW YELLOW
IN: fep OUT: YELLOW
IN: fep fep wif lug OUT: YELLOW BLUE YELLOW
IN: tufa wif tufa OUT: PURPLE PURPLE
IN: dax blicket OUT: GREEN GREEN
IN: fep wif dax OUT: GREEN YELLOW
IN: fep kiki tufa OUT: YELLOW PURPLE YELLOW
IN: lug kiki fep OUT: BLUE YELLOW BLUE
IN: fep tufa OUT: YELLOW PURPLE
IN: fep lug wif dax OUT: YELLOW GREEN BLUE
IN: tufa OUT: PURPLE
IN: lug wif lug OUT: BLUE BLUE
IN: lug dax wif fep OUT: BLUE YELLOW GREEN

*QUERY*
IN: dax dax lug kiki fep OUT: GREEN GREEN BLUE YELLOW BLUE
IN: dax tufa kiki tufa OUT: GREEN PURPLE PURPLE PURPLE
IN: tufa kiki tufa OUT: PURPLE PURPLE PURPLE
IN: dax OUT: GREEN
IN: lug blicket OUT: BLUE BLUE
IN: dax kiki lug OUT: GREEN BLUE GREEN
IN: lug OUT: BLUE
IN: fep blicket OUT: YELLOW YELLOW
IN: fep dax blicket OUT: YELLOW GREEN GREEN
IN: fep tufa blicket OUT: YELLOW PURPLE PURPLE

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