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

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

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