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

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

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