In the list of vocabulary in our first twenty five lessons, you can find a “Conjugate” button next to each verb and adjective. By clicking on this button, you can quickly see how that word changes as a result of adding any grammatical principle. For example, by clicking the button beside “쉽다” in Lesson 7, the following information will pop up:
| ~아/어 (Lessons 5 and 6) | 쉬워 | 
| ~ㄴ/은 (Lesson 4) | 쉬운 | 
| ~ㄴ/는다 (Lesson 5) | – | 
| ~ㅂ/습니다 (Lesson 6) | 쉽습니다 | 
| ~ㄹ/을 (Lesson 9 and 26) | 쉬울 | 
| ~니 (Lesson 21) | 쉽니 | 
| ~ㅁ/음 (Lesson 29) | 쉬움 | 
| ~(으)려니 | 쉬우려니 | 
| ~(으)시 (Lesson 39) | 쉬우시 | 
| ~(으)면 (Lesson 43) | 쉬우면 | 
| ~(으)니 (Lesson 81) | 쉬우니 | 
You can learn how to apply this information by checking out this page.
Cool, eh?!