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

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

*GRAMMAR*
fep -> PURPLE 
 blicket -> YELLOW 
 tufa -> GREEN 
 gazzer -> RED 
 u1 dax u2 -> [u2] [u1] 
 x1 wif x2 -> [x1] [x2] [x2] [x1] 
 x1 zup -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 