
Irregular verb: forget - forgot - forgotten
Simple form | V-ing form | 
| I can forget you can forget she can forget we can forget you can forget they can forget  | I can be forgetting you can be forgetting she can be forgetting we can be forgetting you can be forgetting they can be forgetting  | 
Perfect | V-ing perfect | 
| I can have forgotten you can have forgotten she can have forgotten we can have forgotten you can have forgotten they can have forgotten  | I can have been forgetting you can have been forgetting she can have been forgetting we can have been forgetting you can have been forgetting they can have been forgetting  | 
Simple form | V-ing form | 
| I can't forget you can't forget she can't forget we can't forget you can't forget they can't forget  | I can't be forgetting you can't be forgetting she can't be forgetting we can't be forgetting you can't be forgetting they can't be forgetting  | 
Perfect | V-ing perfect | 
| I can't have forgotten you can't have forgotten she can't have forgotten we can't have forgotten you can't have forgotten they can't have forgotten  | I can't have been forgetting you can't have been forgetting she can't have been forgetting we can't have been forgetting you can't have been forgetting they can't have been forgetting  | 
Simple form | V-ing form | 
| can I forget? can you forget? can she forget? can we forget? can you forget? can they forget?  | can I be forgetting? can you be forgetting? can she be forgetting? can we be forgetting? can you be forgetting? can they be forgetting?  | 
Perfect | V-ing perfect | 
| can I have forgotten? can you have forgotten? can she have forgotten? can we have forgotten? can you have forgotten? can they have forgotten?  | can I have been forgetting? can you have been forgetting? can she have been forgetting? can we have been forgetting? can you have been forgetting? can they have been forgetting?  | 
Simple form | V-ing form | 
| can't I forget? can't you forget? can't she forget? can't we forget? can't you forget? can't they forget?  | can't I be forgetting? can't you be forgetting? can't she be forgetting? can't we be forgetting? can't you be forgetting? can't they be forgetting?  | 
Perfect | V-ing perfect | 
| can't I have forgotten? can't you have forgotten? can't she have forgotten? can't we have forgotten? can't you have forgotten? can't they have forgotten?  | can't I have been forgetting? can't you have been forgetting? can't she have been forgetting? can't we have been forgetting? can't you have been forgetting? can't they have been forgetting?  |