Each state of the United States selects two senators to represent their states in the United States Senate. In 1913, the 17th Amendment[?] to the United States Constitution provided for the direct popular election of senators; prior to this, senators were selected by state legislatures.
... The four systems are:
Present[?] (Present[?], Imperfect[?], Imperative, Potential)
Future (Future[?], Conditional)
Aorist[?]
Perfect[?]
Word order[?] is free with ...