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

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

*GRAMMAR*
zup -> PINK 
 tufa -> YELLOW 
 wif -> RED 
 fep -> GREEN 
 x1 kiki u1 -> [x1] [u1] 
 x1 lug u1 -> [u1] [x1] 
 u1 gazzer u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 