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

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

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