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

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

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