WHITE SQUARE WITH LEFTWARDS TICK
THREE DIMENSIONAL ANGLE
WHITE TRIANGLE CONTAINING SMALL WHITE TRIANGLE
OPEN SUPERSET
SUPERSET PRECEDING SOLIDUS
ELEMENT OF OPENING UPWARDS
LEFT OUTER JOIN
LARGE DOWN TACK
LEFT AND RIGHT DOUBLE TURNSTILE
LEFT AND RIGHT TACK
LONG LEFT TACK
UP TACK WITH CIRCLE ABOVE
MATHEMATICAL LEFT WHITE SQUARE BRACKET
MATHEMATICAL LEFT WHITE TORTOISE SHELL BRACKET
MATHEMATICAL LEFT FLATTENED PARENTHESIS
MATHEMATICAL RIGHT FLATTENED PARENTHESIS