(part.) question particle (used sentence-initially and/or sentence-finally); 

(adj.) which, what

• how:  ai eine (what means)
• who: ai ena (that person)
• what: ai amo (which thing)
• when: ala ai tale (at which time)
• where ai ala (which place)
• why ai wohope
• how many: ai tiku (which number)