The Government may terminate a contract for cause (commercial items), for default (T4D) or for convenience (T4C). Terminations for commercial items (FAR Part 12) contracts are governed by FAR 52.212-4(l) and (m), not the T4C or T4D clauses of FAR 52.249-x. FAR Part 49 prescribes T4D and T4C clauses in FAR Part 52 for non-commercial items (FAR Part 12) related contracts. In particular, T4D is covered by FAR Subpart 49.4, Terminations for Default. T4C is covered by several sections of FAR Part 49.