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

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

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