 Some compounds appear fanciful, or at least not immediately transparent, such as "ky + luf" (eat + air) to mean "picnic".Grammatical features include the use of single letters (as opposed to verb conjugations) to indicate tense; the letter "r" indicates future tense and "y" indicates past.Thus, "j sa" = I know, "j ysa" = I knew, "j r sa" = I will know.