*SUPPORT*
IN: wif lug tufa OUT: GREEN RED GREEN RED
IN: fep OUT: PURPLE
IN: lug wif OUT: RED GREEN
IN: lug dax wif OUT: GREEN RED GREEN
IN: lug kiki OUT: RED RED
IN: wif dax fep tufa OUT: PURPLE PURPLE GREEN PURPLE PURPLE
IN: lug kiki kiki tufa OUT: RED RED RED RED RED RED RED RED
IN: lug zup kiki OUT: RED PINK RED PINK
IN: lug dax zup kiki OUT: PINK PINK RED PINK PINK
IN: zup tufa OUT: PINK PINK
IN: lug zup zup tufa OUT: RED PINK PINK RED PINK PINK
IN: zup dax wif dax zup OUT: PINK GREEN PINK PINK PINK GREEN PINK
IN: fep dax lug OUT: RED PURPLE RED
IN: zup tufa tufa tufa OUT: PINK PINK PINK PINK PINK PINK PINK PINK

*QUERY*
IN: lug fep kiki OUT: RED PURPLE RED PURPLE
IN: zup OUT: PINK
IN: wif OUT: GREEN
IN: wif fep dax zup OUT: GREEN PINK PURPLE PINK
IN: zup zup kiki tufa OUT: PINK PINK PINK PINK PINK PINK PINK PINK
IN: lug tufa OUT: RED RED
IN: lug dax zup OUT: PINK RED PINK
IN: lug OUT: RED
IN: wif wif tufa OUT: GREEN GREEN GREEN GREEN
IN: wif tufa OUT: GREEN GREEN

*GRAMMAR*
lug -> RED 
 wif -> GREEN 
 zup -> PINK 
 fep -> PURPLE 
 u1 dax x1 -> [x1] [u1] [x1] 
 x1 tufa -> [x1] [x1] 
 x1 kiki -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 