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

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

*GRAMMAR*
dax -> RED 
 lug -> PINK 
 gazzer -> GREEN 
 wif -> YELLOW 
 x1 tufa x2 -> [x1] [x2] 
 u1 fep x1 -> [u1] [u1] [x1] 
 x1 zup -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 