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

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

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