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

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

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