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

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

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