*SUPPORT*
IN: dax gazzer zup wif blicket fep gazzer wif OUT: PURPLE PINK GREEN PURPLE BLUE
IN: zup OUT: GREEN
IN: wif OUT: PURPLE
IN: fep OUT: PINK
IN: dax lug blicket zup zup OUT: GREEN GREEN BLUE BLUE
IN: fep lug OUT: PINK PINK
IN: dax wif lug OUT: BLUE PURPLE PURPLE
IN: dax lug OUT: BLUE BLUE
IN: wif lug OUT: PURPLE PURPLE
IN: dax gazzer zup OUT: GREEN BLUE
IN: dax wif OUT: BLUE PURPLE
IN: dax blicket fep lug blicket fep OUT: PINK PINK PINK BLUE
IN: wif dax fep OUT: PURPLE BLUE PINK
IN: fep fep lug OUT: PINK PINK PINK

*QUERY*
IN: zup lug OUT: GREEN GREEN
IN: wif zup gazzer fep blicket zup OUT: GREEN PURPLE PINK GREEN
IN: fep gazzer fep wif blicket dax OUT: BLUE PINK PURPLE PINK
IN: fep wif fep OUT: PINK PURPLE PINK
IN: fep dax lug OUT: PINK BLUE BLUE
IN: dax OUT: BLUE
IN: zup gazzer wif gazzer dax fep gazzer zup OUT: BLUE GREEN PINK PURPLE GREEN
IN: zup gazzer dax lug OUT: BLUE BLUE GREEN
IN: dax gazzer zup gazzer dax lug OUT: BLUE BLUE GREEN BLUE
IN: wif lug blicket wif gazzer zup OUT: GREEN PURPLE PURPLE PURPLE

*GRAMMAR*
wif -> PURPLE 
 zup -> GREEN 
 dax -> BLUE 
 fep -> PINK 
 u1 gazzer x1 -> [x1] [u1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 