JSFiddle - React, Tailwind, and code Playground

HTML

Digita apenas um "A" no input
<form action="" method="post" enctype="multipart/form-data">
    <input placeholder="Categoria" id="categoria" name="cate">
</form>
<br>No fim do "JAVASCRIPT" tem uma parte da função que contem todos os valores

CSS

/* Layout helpers
----------------------------------*/
 .ui-helper-hidden {
    display: none;
}
.ui-helper-hidden-accessible {
    border: 0;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
}
.ui-helper-reset {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    line-height: 1.3;
    text-decoration: none;
    font-size: 100%;
    list-style: none;
}
.ui-helper-clearfix:before, .ui-helper-clearfix:after {
    content:"";
    display: table;
    border-collapse: collapse;
}
.ui-helper-clearfix:after {
    clear: both;
}
.ui-helper-clearfix {
    min-height: 0;
    /* support: IE7 */
}
.ui-helper-zfix {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    position: absolute;
    opacity: 0;
    filter:Alpha(Opacity=0);
    /* support: IE8 */
}
.ui-front {
    z-index: 100;
}
/* Misc visuals
----------------------------------*/

/* Overlays */
 .ui-widget-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.ui-accordion .ui-accordion-header {
    display: block;
    cursor: pointer;
    position: relative;
    margin: 2px 0 0 0;
    padding: .5em .5em .5em .7em;
    min-height: 0;
    /* support: IE7 */
    font-size: 100%;
}
.ui-accordion .ui-accordion-icons {
    padding-left: 2.2em;
}
.ui-accordion .ui-accordion-icons .ui-accordion-icons {
    padding-left: 2.2em;
}
.ui-accordion .ui-accordion-header .ui-accordion-header-icon {
    position: absolute;
    left: .5em;
    top: 50%;
    margin-top: -8px;
}
.ui-accordion .ui-accordion-content {
    padding: 1em 2.2em;
    border-top: 0;
    overflow: auto;
}
.ui-autocomplete {
    position: absolute;
    top: 0;
    left: 0;
    cursor: default;
}
.ui-button {
    display: inline-block;
    position: relative;
    padding: 0;
    line-height: normal;
    margin-right: .1em;
    cursor: pointer;
    vertical-align: middle;
    text-align: center;
    overflow:...

JavaScript

//Parte da função que fica com os valores
$(function () {
    var availableTags = [
        "AA", "AB", "AC", "AD", "AE", "AF", "AG", "AH", "AI", "AJ", "AK", "AL", "AM", "AN", "AO", "AP", "AQ", "AR", "AS", "AT", "AU", "AV", "AX", "AZ", ];
    $("#categoria").autocomplete({
        source: function (request, response) {
            var results = $.ui.autocomplete.filter(availableTags, request.term);
            response(results.slice(0, 5));
        }
    });
});