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

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

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