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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Common code 4 letters:

HTML: Code commonly used in web development
AREA: Common code
AREA: Common code type
AREA: Common type of code
MORSE: The common code.
ZIP: Common code.
MORSE: Common code
SOS: Common Morse-code message
DOT: Most common English letter, in Morse code