Equity jurisdiction over matters of account shall extend to:
(1) Mutual accounts growing out of privity of contract;
(2) Cases where accounts are complicated and intricate;
(3) Cases where a discovery or writ of ne exeat is prayed and
granted;
(4) Cases where the account is of a trust fund;
(5) Accounts between partners or tenants in common; and
(6) Cases where a multiplicity of actions would render a trial difficult, expensive, and unsatisfactory at law.