The bottom 4-stroke body — graphically identical to standalone
开 (open), but here functioning as the stylised lower halves of two parallel figures rather than carrying the 'open' meaning. Together with the
丷 top this gives the side-by-side silhouette behind
并's senses of 'parallel, combine, and (also)'. Indexed under Kangxi #51
干 by tradition, though no shield-element survives in the modern form.