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

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

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