Total verb forms: 51
| Imperatives and participles |
| Present Participle | crumbling |
| Present Participle | crumbled |
| Imperative | crumble |
| Type | I | you | he/she/it | we | you | they |
| Present | crumble | crumble | crumbles | crumble | crumble | crumble |
| Past | crumbled | crumbled | crumbled | crumbled | crumbled | crumbled |
| Future | will crumble | will crumble | will crumble | will crumble | will crumble | will crumble |
| Present conditional | would crumble | would crumble | would crumble | would crumble | would crumble | would crumble |
| Past conditional | would have crumbled | would have crumbled | would have crumbled | would have crumbled | would have crumbled | would have crumbled |
| Present Perfect | have crumbled | have crumbled | has crumbled | have crumbled | have crumbled | have crumbled |
| Past Perfect | had crumbled | had crumbled | had crumbled | had crumbled | had crumbled | had crumbled |
| Future Perfect | will have crumbled | will have crumbled | will have crumbled | will have crumbled | will have crumbled | will have crumbled |
Conjugated verbs before and after crumble
