vocalized יָשַׁב (, he sat), but adding a Yod doesn't solve the ambiguity – יישב may be vocalized יְיַשֵׁב (, he will settle) and יִשֵׁב (, he settled). Because of the many potential ambiguities, the Academy suggests adding vocalization in such cases. Several other (non-comprehensive) examples: The standard spelling of the plural form of the word פְּרִי (, fruit) is פֵּרוֹת () with niqqud and פרות without niqqud, but it is often written פירות‎ (פרות may also mean פָּרוֹת cows). The words אֵזוֹר (, zone), הֵפֶךְ (, contrary; also הֶפֶךְ‎), תֵּכֶף (, immediately; also תֶּכֶף) are sometimes spelled איזור‎, היפך‎, תיכף, although the standard spelling without niqqud is אזור‎, הפך‎, תכף. (In the Even-Shoshan dictionary תיכף refers to תֶּכֶף; in the Rav-Millim dictionary it is the main entry.) Some notable common deviations from the standard in which a Yod is not written include: According to the modern spelling rules, the Academy mandates writing a Yod in some cases in which the vowel changes to for grammatical reasons. (Not writing the Yod is correct according to the old ktiv haser spelling.) For example: In the future, imperative and infinitive forms of verbs in binyan nif'al, the vowel of the prefix is usually , which in standard spelling without niqqud is written with a Yod: לְהִזָּהֵר (, to be cautious), standard spelling without niqqud: להיזהר. This vowel changes to before the guttural letters א‎, ה‎, ח‎, ע‎, ר‎: לְהֵרָדֵם (, to fall asleep), standard spelling without niqqud: להירדם. Sometimes, however, verbs with both and are written without a Yod in texts without niqqud: להזהר‎, להרדם. In nouns of the pattern CiCCuC, such as סִפּוּק (, satisfaction, without niqqud סיפוק) the vowel also changes to before guttural letters: פֵּרוּשׁ (, commentary), תֵּאוּר (, description), without niqqud: פירוש‎, תיאור, but sometimes פרוש‎, תאור. The Yod is sometimes omitted from words, the last letter of whose root is ה‎. This is a mistake, because in these verbs the Yod is written in texts with niqqud. For example: הוֹדֵיתִי (, I thanked, root י־ד־ה‎), נֶהֱנֵינוּ (, we enjoyed, root ה־נ־ה) are sometimes incorrectly spelled הודתי‎, נהננו. Tzere with aleph and he The letter aleph (א) is the mater lectionis after tzere in the middle or the end of the word when it is a part of the root: מוֹצֵא (, finding m.), מוֹצֵאת (, finding f.). The letter he (ה) is very rarely used as a