字母

letter; character; lettering; grapheme; alphabetical; alphabetic

代表

representative; typical; proxy; emblematic; represent; front; express; symbolize; symbolise; signify; typify; deputize; exemplify; indicate; incarnate; designate; embody; denote; act; stand for; speak for; act on behalf of; representation; delegate; deputy; rep; archetype; ambassador; frontman; envoy; specimen; man; interlocutor; symbol; example; icon; marker; incarnation; standard bearer; pp; for; on behalf; on behalf of; in behalf; in the name of; in name; in absence

数字

number; numeral; digit; figure; count; numeric; numerical; digital