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

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

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