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

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

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