字母

letter; character; lettering; grapheme; alphabetical; alphabetic

大小

size; extent; volume; big or small; adults and children; degree of seniority; various sizes; large and small; quantitative; of all sizes

规范

norm; specification; standard; requirement; principle; criterion; code; convention; canon; protocol; parameter; precept; standardize; normalize; regulate; codify; normative; regular; conventional; standardized; formal; proper; orthodox; prescriptive

书写

write; inscribe; scribe; pen; transcribe; jot down; note down; writing; handwriting; calligraphy