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

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

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