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

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

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