Crossword clues for B's 5 and C's 6 5 letters:ATNOSB's 5 and C's 6ATNOS5 for B and 6 for CATNO5 for B or 6 for C, e.g.ATNO5 for B or 6 for CATNOIt's 5 for B and 6 for C: Abbr.