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

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

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