\bworth \S+ing\b \bworth +\S+ing\b \bworth\s+\S+ing\b \bworth\W* +\S+ing\b \bworth\W*\s+\S+ing\b \bworth\W+\S+ing\b \bworth["')>]*\s+\S+ing\b \bworth\b.{1,20}?\S+ing\b ■4.9 But his ideas are worth discussing now. But his ideas are worth "discussing" now. But his ideas are worth discussing now. But his ideas are [worth] discussing now. But his ideas are "worth" discussing now. But his ideas (are worth) discussing now. ↓スペースによるインデント Alice thought she might as well wait, as she had nothing else to do, and perhaps after all it might tell her something worth hearing. ↓タブによるインデント Alice thought she might as well wait, as she had nothing else to do, and perhaps after all it might tell her something worth hearing.