What words can be combined?

Command,

Rules,

All of them,

Overall planning,

Legal system,

Mr. President,

Unification,

United front,

Overall,

Unified camera,

A unified commodity,

Unified * * *,

Descent,

System,

Unified management,

Turn,

Control,

Unified distribution,

Unity,

General,

Unified examination,

Commander in chief,

System,

Control,

Statistics,

Unified purchase,

In general,

Orthodox,

Unified,

Command,

Unified marketing,

Governance,

Tong Tong,

Tiantong,

Long series,

Military system,

Direct system,

Bangtong,

Legacy,

Jiantong