Commonwealth in the following cases:
(a) where the proceeding is founded on a cause of action
arising in the Commonwealth;
(aa) where the proceeding is founded on a breach in the
Commonwealth of a contract, wherever made, whether or not
the breach is preceded or accompanied by a breach,
wherever occurring, that renders impossible the
performance of any part of the contract which ought to be
performed in the Commonwealth;
(ab) where the proceeding:
(i) is for the enforcement, rescission, dissolution,
rectification or annulment of a contract; or
(ii) otherwise affects a contract; or
(iii) is for damages or other relief in respect of the
breach of a contract; and the contract:
(iv) is made in the Commonwealth; or
(v) is made on behalf of the person to be served by
or through an agent carrying on business or
residing in the Commonwealth; or
(vi) is governed by the law of the Commonwealth or of
a State or Territory;
(ac) where the proceeding is founded on a tort committed in
the Commonwealth;
(ad) where the proceeding is founded on, or is for the
recovery of, damage suffered wholly or partly in the
Commonwealth caused by a tortious act or omission,
wherever occurring;
...
(b) where the proceeding is founded on a breach of an Act,
where the breach is committed in the Commonwealth;
(c) where the proceeding is founded on a breach, wherever
occurring, of an Act, and is brought in respect of, or
for the recovery of, damage suffered wholly or partly in
the Commonwealth;
...
(g) where the proceeding is properly brought against a person
served or to be served in the Commonwealth and the person
to be served outside the Commonwealth is properly joined
as a party to the proceeding;
...
(n) where the proceeding, so far as concerns the person to be
served, falls partly within one of the foregoing
paragraphs and falls, as to the residue, within one or
more of the others of the foregoing paragraphs."