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

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

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