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

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

*GRAMMAR*
dax -> PURPLE 
 fep -> YELLOW 
 tufa -> GREEN 
 wif -> RED 
 u1 lug x1 -> [u1] [u1] [x1] 
 x1 kiki x2 -> [x2] [x1] 
 u1 gazzer u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 