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

Crossword clues for Prefix for valence 4 letters:

AMBI: Prefix with valence
AMBI: Prefix for valence
EQUI: Prefix for poise and valence
UNI: Prefix with valence
TRI: Prefix for atomic or valence