 These 21 short videos will help you quickly see and understand the relationships and patterns among various types of irregular verbs in English so that you can use them correctly. Verbs like stand. This video will help you see relationships among various types of irregular verbs in English. The key to understanding irregular verbs is to look for and notice the patterns. 19. Verbs like stand. Verbs like stand change both the vowel and the consonant sound in the past and the past participle. For example, stand stood stood. Understand understood understood. Hear heard heard. Lose lost lost. Notice that you have a sound change in both the vowel and the final consonant.