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

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

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