*SUPPORT*
IN: kiki OUT: RED
IN: kiki lug zup OUT: RED PINK PINK PINK
IN: dax lug OUT: GREEN PINK
IN: lug tufa dax zup OUT: GREEN GREEN GREEN PINK PINK
IN: dax OUT: GREEN
IN: lug tufa kiki OUT: RED PINK PINK
IN: lug OUT: PINK
IN: lug lug wif kiki OUT: RED RED PINK PINK
IN: dax zup OUT: GREEN GREEN GREEN
IN: lug wif kiki OUT: RED RED PINK
IN: fep fep fep OUT: BLUE BLUE BLUE
IN: lug lug zup OUT: PINK PINK PINK PINK
IN: dax dax zup OUT: GREEN GREEN GREEN GREEN
IN: kiki zup OUT: RED RED RED

*QUERY*
IN: lug zup wif fep OUT: BLUE BLUE PINK PINK PINK
IN: lug tufa fep tufa fep zup OUT: BLUE BLUE BLUE BLUE BLUE PINK PINK
IN: kiki tufa lug OUT: PINK RED RED
IN: fep OUT: BLUE
IN: fep kiki OUT: BLUE RED
IN: dax tufa fep tufa kiki OUT: RED BLUE BLUE GREEN GREEN
IN: lug zup OUT: PINK PINK PINK
IN: kiki dax zup OUT: RED GREEN GREEN GREEN
IN: dax tufa dax tufa lug zup OUT: PINK PINK PINK GREEN GREEN GREEN GREEN
IN: dax kiki zup OUT: GREEN RED RED RED

*GRAMMAR*
lug -> PINK 
 fep -> BLUE 
 kiki -> RED 
 dax -> GREEN 
 u1 tufa x1 -> [x1] [u1] [u1] 
 x1 wif x2 -> [x2] [x2] [x1] 
 u1 zup -> [u1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 