This can be subdivided into four main sub-categories.

这种模式可以被分成四种主要的子模式。

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Which categories are the top-level categories, and which are sub-categories?

哪些类别是顶级类别，哪些是子类别？

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The Space Administration category is further classified into three sub-categories, namely

Space Administration 进一步分为三个部分，即

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The opposition would split Category Two loans into five sub-categories with strict provisioning levels for each.

ECONOMIST: Bruised, battered and broke

The large sub-categories are Social Security, Medicare, Medicaid and various forms of public assistance (food stamps, housing support, etc.).

FORBES: Federal Spending Up, Employment Down

The allocation is further divided into sub-categories for more diversification, such as U.S. equities, international equities, Treasury bonds, corporate bonds, etc.

FORBES: Earn More with Index Funds in 2013 and Beyond