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

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

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