OPEN SUBSET
PERPENDICULAR
OR WITH DOT INSIDE
SUPERSET PRECEDING SOLIDUS
SQUARED LOGICAL OR
UPPER LEFT CORNER WITH DOT
RIGHT OUTER JOIN
LARGE UP TACK
LARGE DOWN TACK
LEFT MULTIMAP
LONG LEFT TACK
UP TACK WITH CIRCLE ABOVE
LOZENGE DIVIDED BY HORIZONTAL RULE
MATHEMATICAL LEFT WHITE SQUARE BRACKET
MATHEMATICAL LEFT ANGLE BRACKET
MATHEMATICAL RIGHT WHITE TORTOISE SHELL BRACKET