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

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

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