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

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

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