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

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

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