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

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

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