Transition Word Checker

${[ ['Addition','also, furthermore, moreover, in addition, besides, additionally'], ['Contrast','however, nevertheless, on the other hand, although, conversely, yet'], ['Cause & Effect','therefore, consequently, as a result, thus, hence, because'], ['Time / Sequence','first, then, next, finally, subsequently, previously, meanwhile'], ['Examples','for example, for instance, specifically, namely, to illustrate'], ['Summary','in conclusion, in summary, overall, to summarize, ultimately'], ['Emphasis','indeed, in fact, certainly, undoubtedly, clearly, most importantly'], ].map(([cat, words]) => ` `).join('')}