en_btr_frontend/app/components/words/phrase-row.hbs

{{#each this.phraseWords as |pw|}}
  {{#if pw.rootRow}}
    <Words::WordRow @model={{pw}} @rowspan={{this.rowCount}} />
  {{else}}
    <Words::WordRow @model={{pw}} @isPartial={{true}} />
  {{/if}}
{{/each}}