
Irregular verb: understand - understood - understood
Simple form | V-ing form | 
| I might understand you might understand she might understand we might understand you might understand they might understand  | I might be understanding you might be understanding she might be understanding we might be understanding you might be understanding they might be understanding  | 
Perfect | V-ing perfect | 
| I might have understood you might have understood she might have understood we might have understood you might have understood they might have understood  | I might have been understanding you might have been understanding she might have been understanding we might have been understanding you might have been understanding they might have been understanding  | 
Simple form | V-ing form | 
| I mightn't understand you mightn't understand she mightn't understand we mightn't understand you mightn't understand they mightn't understand  | I mightn't be understanding you mightn't be understanding she mightn't be understanding we mightn't be understanding you mightn't be understanding they mightn't be understanding  | 
Perfect | V-ing perfect | 
| I mightn't have understood you mightn't have understood she mightn't have understood we mightn't have understood you mightn't have understood they mightn't have understood  | I mightn't have been understanding you mightn't have been understanding she mightn't have been understanding we mightn't have been understanding you mightn't have been understanding they mightn't have been understanding  | 
Simple form | V-ing form | 
| might I understand? might you understand? might she understand? might we understand? might you understand? might they understand?  | might I be understanding? might you be understanding? might she be understanding? might we be understanding? might you be understanding? might they be understanding?  | 
Perfect | V-ing perfect | 
| might I have understood? might you have understood? might she have understood? might we have understood? might you have understood? might they have understood?  | might I have been understanding? might you have been understanding? might she have been understanding? might we have been understanding? might you have been understanding? might they have been understanding?  | 
Simple form | V-ing form | 
| mightn't I understand? mightn't you understand? mightn't she understand? mightn't we understand? mightn't you understand? mightn't they understand?  | mightn't I be understanding? mightn't you be understanding? mightn't she be understanding? mightn't we be understanding? mightn't you be understanding? mightn't they be understanding?  | 
Perfect | V-ing perfect | 
| mightn't I have understood? mightn't you have understood? mightn't she have understood? mightn't we have understood? mightn't you have understood? mightn't they have understood?  | mightn't I have been understanding? mightn't you have been understanding? mightn't she have been understanding? mightn't we have been understanding? mightn't you have been understanding? mightn't they have been understanding?  |