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

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

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