of action not performed in the past, [1495];
of action not performed at present time, [1497];
of past action going on, [1594];
of past action lasting while something occurs, [1595];
of repeated or customary action, [1596];
of past action still continued in past, [1597];
of action suddenly recognized, [1598];
in descriptions and general truths, [1599];
in letters and messages, [1601];
in conative use, [2302];