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

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

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