*SUPPORT*
IN: wif fep gazzer fep OUT: YELLOW GREEN GREEN GREEN
IN: wif gazzer tufa OUT: YELLOW YELLOW PURPLE
IN: dax lug wif dax OUT: BLUE YELLOW BLUE YELLOW BLUE
IN: wif dax wif gazzer fep blicket dax OUT: BLUE YELLOW BLUE YELLOW YELLOW GREEN
IN: tufa gazzer wif OUT: PURPLE PURPLE YELLOW
IN: fep dax fep lug wif wif OUT: GREEN BLUE GREEN YELLOW YELLOW YELLOW YELLOW
IN: dax wif gazzer wif OUT: BLUE YELLOW YELLOW YELLOW
IN: wif wif tufa dax OUT: YELLOW YELLOW PURPLE BLUE
IN: tufa lug dax blicket tufa OUT: PURPLE PURPLE BLUE BLUE
IN: fep blicket fep OUT: GREEN GREEN
IN: tufa OUT: PURPLE
IN: dax lug dax lug fep blicket dax OUT: BLUE BLUE BLUE GREEN GREEN BLUE GREEN GREEN
IN: wif OUT: YELLOW
IN: wif lug dax gazzer wif OUT: YELLOW BLUE BLUE YELLOW BLUE BLUE YELLOW

*QUERY*
IN: tufa lug tufa gazzer tufa blicket fep OUT: GREEN PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE
IN: wif blicket tufa blicket tufa OUT: PURPLE PURPLE YELLOW
IN: fep wif OUT: GREEN YELLOW
IN: fep OUT: GREEN
IN: tufa gazzer dax OUT: PURPLE PURPLE BLUE
IN: fep gazzer wif OUT: GREEN GREEN YELLOW
IN: wif lug tufa OUT: YELLOW PURPLE PURPLE
IN: dax gazzer fep OUT: BLUE BLUE GREEN
IN: wif gazzer wif OUT: YELLOW YELLOW YELLOW
IN: fep gazzer dax OUT: GREEN GREEN BLUE

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