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

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

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