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.