SENTIR (TO FEEL)

A common type of -ir verb.  The endings are regular, but the stem vowel changes to ie or to i in certain forms. All forms as for a regular -ir verb (including bracketed ones), except:
Gerund: sintiendo
Imperative: (tú) siente, (usted) sienta, (ustedes) sientan
Present Indicative: siento, sientes, siente, (sentimos), (sentis), sienten
Preterite: (sentí), (sentiste), sintío, (sentimos), (sentisteis), sintieron
Present subjunctive: sienta, sientas, sienta, sintamos, sintáis, sientan
Imperfect subjunctive (-ra): sintiera, sintieras, sintiera, sintiéramos, sintierais, sintieran
Imperfective subjunctive (-se) sintiese, sintieses, sintiese, sintiésemos, sintieseis, sintiesen