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

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

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