SI010000 :: Similar But Not Equal
SI010000 <=> U+303E # IDEOGRAPHIC VARIATION INDICATOR

SI020000 :: Left-Right
SI020000 <=> U+2FF0 # IDEOGRAPHIC DESCRIPTION CHARACTER LEFT TO RIGHT

SI030000 :: Up-Down
SI030000 <=> U+2FF1 # IDEOGRAPHIC DESCRIPTION CHARACTER ABOVE TO BELOW

SI040000 :: Left-Middle-Right
SI040000 <=> U+2FF2 # IDEOGRAPHIC DESCRIPTION CHARACTER LEFT TO MIDDLE AND RIGHT

SI050000 :: Up-Middle-Down
SI050000 <=> U+2FF3 # IDEOGRAPHIC DESCRIPTION CHARACTER ABOVE TO MIDDLE AND BELOW

SI060000 :: Overall-Rounded Structure
SI060000 <=> U+2FF4 # IDEOGRAPHIC DESCRIPTION CHARACTER FULL SURROUND

SI070000 :: Downward-Encompass
SI070000 <=> U+2FF5 # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM ABOVE

SI080000 :: Upward-Encompass
SI080000 <=> U+2FF6 # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM BELOW

SI090000 :: Rightward Encompass
SI090000 <=> U+2FF7 # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM LEFT

SI100000 :: Right-Down Encompass
SI100000 <=> U+2FF8 # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM UPPER LEFT

SI110000 :: Left-Down Encompass
SI110000 <=> U+2FF9 # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM UPPER RIGHT

SI120000 :: Right-Up Encompass
SI120000 <=> U+2FFA # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM LOWER LEFT

SI130000 :: Embedded Structure
SI130000 <=> U+2FFB # IDEOGRAPHIC DESCRIPTION CHARACTER OVERLAID

SI140000 :: Leftward Encompass
SI140000 <=> U+2FFC # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM RIGHT

SI150000 :: Left-Up Encompass
SI150000 <=> U+2FFD # IDEOGRAPHIC DESCRIPTION CHARACTER SURROUND FROM LOWER RIGHT

SI160000 <=> U+2FFE # IDEOGRAPHIC DESCRIPTION CHARACTER HORIZONTAL REFLECTION

SI170000 <=> U+2FFF # IDEOGRAPHIC DESCRIPTION CHARACTER ROTATION

SI180000 <=> U+31EF # IDEOGRAPHIC DESCRIPTION CHARACTER SUBTRACTION