Any propositional formula can be reduced to its conjunctive or disjunctive normal form. The conjunction is the geometric mean and its dual as conjunctive and disjunctive operators. Pohnpeian permits relative clauses and conjoined clauses through use of conjunctions and conjunctive adverbs. No "subparts, or a compound, conjunctive, or disjunctive question" may be included in an interrogatory. The clause that a conjunctive adverb introduces invariably modifies a (usually previously expressed) logical predication. There are many problems related to the satisfiability of conjunctive normal form Boolean formulas. Non-aspectual forms include the infinitive, the imperative, and the conjunctive. Clitical elements are written connected to a noun or verb form (conjunctive spelling). Every CSP can also be considered as a conjunctive query containment problem. In terms of data integration, "query containment" represents an important property of conjunctive queries. The truth evaluation of an empty conjunctive clause is always formula 9. This shows that the conjunctive query problem is also equivalent to the homomorphism problem. Many first-order queries can be written as conjunctive queries. Original Rapa Nui has no conjunctive particles. Higher numbers are done as with the nonhuman conjunctive numbers&colon; , , etc.