*SUPPORT*
IN: fep blicket dax fep OUT: GREEN YELLOW YELLOW
IN: zup kiki fep OUT: RED RED YELLOW
IN: fep tufa dax OUT: YELLOW GREEN
IN: zup OUT: RED
IN: dax kiki fep OUT: GREEN GREEN YELLOW
IN: gazzer blicket gazzer OUT: PINK PINK
IN: fep fep tufa dax blicket gazzer kiki dax OUT: PINK PINK GREEN YELLOW YELLOW GREEN
IN: zup blicket fep blicket dax OUT: GREEN YELLOW RED
IN: zup tufa dax OUT: RED GREEN
IN: zup kiki zup OUT: RED RED RED
IN: gazzer OUT: PINK
IN: gazzer dax blicket dax tufa zup OUT: GREEN RED PINK GREEN
IN: dax OUT: GREEN
IN: fep gazzer tufa dax OUT: YELLOW PINK GREEN

*QUERY*
IN: fep zup kiki zup OUT: YELLOW RED RED RED
IN: zup fep dax tufa fep OUT: RED YELLOW GREEN YELLOW
IN: zup tufa gazzer OUT: RED PINK
IN: fep gazzer zup tufa zup OUT: YELLOW PINK RED RED
IN: fep kiki fep OUT: YELLOW YELLOW YELLOW
IN: fep OUT: YELLOW
IN: gazzer tufa zup OUT: PINK RED
IN: dax tufa dax OUT: GREEN GREEN
IN: fep tufa gazzer OUT: YELLOW PINK
IN: dax dax kiki dax OUT: GREEN GREEN GREEN GREEN

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