ZERO WIDTH SPACE
U+200B
ZERO WIDTH NON-JOINER
U+200C
ZERO WIDTH JOINER
U+200D
LEFT-TO-RIGHT MARK
U+200E
RIGHT-TO-LEFT MARK
U+200F
LEFT-TO-RIGHT EMBEDDING
U+202A
RIGHT-TO-LEFT EMBEDDING
U+202B
POP DIRECTIONAL FORMATTING
U+202C
LEFT-TO-RIGHT OVERRIDE
U+202D
RIGHT-TO-LEFT OVERRIDE
U+202E
LEFT-TO-RIGHT ISOLATE
U+2066
RIGHT-TO-LEFT ISOLATE
U+2067
FIRST STRONG ISOLATE
U+2068
POP DIRECTIONAL ISOLATE
U+2069