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

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

*GRAMMAR*
fep -> YELLOW 
 wif -> BLUE 
 tufa -> GREEN 
 zup -> RED 
 u1 lug -> [u1] [u1] 
 u1 dax u2 -> [u1] [u2] 
 u1 blicket x1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 