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

*QUERY*
IN: zup OUT: PINK
IN: fep gazzer zup OUT: PINK GREEN PINK GREEN
IN: wif gazzer blicket OUT: YELLOW RED YELLOW RED
IN: wif gazzer fep kiki OUT: GREEN RED GREEN RED GREEN RED GREEN RED
IN: zup gazzer zup kiki OUT: PINK PINK PINK PINK PINK PINK PINK PINK
IN: zup blicket gazzer zup OUT: PINK PINK YELLOW PINK YELLOW
IN: zup gazzer wif OUT: RED PINK RED PINK
IN: fep zup blicket fep kiki OUT: GREEN PINK YELLOW GREEN GREEN PINK YELLOW GREEN
IN: fep gazzer blicket OUT: YELLOW GREEN YELLOW GREEN
IN: blicket fep gazzer fep OUT: YELLOW GREEN GREEN GREEN GREEN

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