(a) When a question is under consideration, no motion shall be received, except as follows:
(1) To lay on the table.
(2) To postpone to a time certain.
(3) To postpone indefinitely.
(4) To refer to a committee.
(5) To amend.
(6) To strike out or insert.
(7) To divide.
(b) Motions for any of these purposes shall have precedence in the order named. (Code 1970, Sec. 2-15)