*SUPPORT*
IN: tufa OUT: GREEN
IN: wif blicket tufa zup OUT: GREEN GREEN BLUE
IN: wif OUT: BLUE
IN: tufa fep zup OUT: GREEN PURPLE PURPLE
IN: dax zup OUT: YELLOW YELLOW
IN: tufa blicket fep OUT: PURPLE GREEN
IN: fep zup OUT: PURPLE PURPLE
IN: fep OUT: PURPLE
IN: fep tufa OUT: PURPLE GREEN
IN: tufa fep OUT: GREEN PURPLE
IN: wif zup OUT: BLUE BLUE
IN: dax OUT: YELLOW
IN: wif dax wif OUT: BLUE YELLOW BLUE
IN: wif tufa kiki fep OUT: BLUE GREEN PURPLE

*QUERY*
IN: fep wif OUT: PURPLE BLUE
IN: fep tufa tufa zup OUT: PURPLE GREEN GREEN GREEN
IN: fep tufa fep fep zup kiki dax OUT: PURPLE GREEN PURPLE PURPLE PURPLE YELLOW
IN: fep zup blicket tufa OUT: GREEN PURPLE PURPLE
IN: tufa dax zup OUT: GREEN YELLOW YELLOW
IN: tufa zup kiki tufa OUT: GREEN GREEN GREEN
IN: tufa kiki dax OUT: GREEN YELLOW
IN: fep kiki fep OUT: PURPLE PURPLE
IN: fep blicket wif zup OUT: BLUE BLUE PURPLE
IN: tufa wif zup OUT: GREEN BLUE BLUE

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