For verbs ending in a consonant and whose last syllable is stressed (like « leit »), the ending is « -ent ». As this ending is unstressed, it is pronounced like « -n't » in the English word « isn't ». But, if the subject is apparent, you can just use a final unpronounced « e ». « The(y) » is « i » i when it refers to a group of living beings of different or unknown genders. « Child », when understood as a « descendant » is « purt » purt. Most Sambahsa words get their plural just as in English, i.e. they had a final « -s ». So translate now into Sambahsa « Are the children fine/OK ? », using « -e » as an ending for the verb.