Conditions are precedent or subsequent. The former fix the beginning, the latter the ending of the right. Source: CivC 1877, § 197; CL 1887, § 2713; RCivC 1903, § 220; RC 1919, § 290; SDC 1939, § 51.0224.
Effect of conditions precedent or subsequent
SDCL § 43-3-2 — under PRESENT AND FUTURE INTERESTS IN PROPERTY.
SDCL § 43-3-2