Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I can uderstate sth you can uderstate sth he can uderstate sth we can uderstate sth you can uderstate sth they can uderstate sth
V-ing form
I can be uderstate sthing you can be uderstate sthing he can be uderstate sthing we can be uderstate sthing you can be uderstate sthing they can be uderstate sthing
Perfect
I can have uderstate sthed you can have uderstate sthed he can have uderstate sthed we can have uderstate sthed you can have uderstate sthed they can have uderstate sthed
V-ing perfect
I can have been uderstate sthing you can have been uderstate sthing he can have been uderstate sthing we can have been uderstate sthing you can have been uderstate sthing they can have been uderstate sthing
Negation
Simple form
I cannot uderstate sth you cannot uderstate sth he cannot uderstate sth we cannot uderstate sth you cannot uderstate sth they cannot uderstate sth
V-ing form
I cannot be uderstate sthing you cannot be uderstate sthing he cannot be uderstate sthing we cannot be uderstate sthing you cannot be uderstate sthing they cannot be uderstate sthing
Perfect
I cannot have uderstate sthed you cannot have uderstate sthed he cannot have uderstate sthed we cannot have uderstate sthed you cannot have uderstate sthed they cannot have uderstate sthed
V-ing perfect
I cannot have been uderstate sthing you cannot have been uderstate sthing he cannot have been uderstate sthing we cannot have been uderstate sthing you cannot have been uderstate sthing they cannot have been uderstate sthing
Interrogative form
Simple form
can I uderstate sth? can you uderstate sth? can he uderstate sth? can we uderstate sth? can you uderstate sth? can they uderstate sth?
V-ing form
can I be uderstate sthing? can you be uderstate sthing? can he be uderstate sthing? can we be uderstate sthing? can you be uderstate sthing? can they be uderstate sthing?
Perfect
can I have uderstate sthed? can you have uderstate sthed? can he have uderstate sthed? can we have uderstate sthed? can you have uderstate sthed? can they have uderstate sthed?
V-ing perfect
can I have been uderstate sthing? can you have been uderstate sthing? can he have been uderstate sthing? can we have been uderstate sthing? can you have been uderstate sthing? can they have been uderstate sthing?
Interro-negative form
Simple form
can I not uderstate sth? can you not uderstate sth? can he not uderstate sth? can we not uderstate sth? can you not uderstate sth? can they not uderstate sth?
V-ing form
can I not be uderstate sthing? can you not be uderstate sthing? can he not be uderstate sthing? can we not be uderstate sthing? can you not be uderstate sthing? can they not be uderstate sthing?
Perfect
can I not have uderstate sthed? can you not have uderstate sthed? can he not have uderstate sthed? can we not have uderstate sthed? can you not have uderstate sthed? can they not have uderstate sthed?
V-ing perfect
can I not have been uderstate sthing? can you not have been uderstate sthing? can he not have been uderstate sthing? can we not have been uderstate sthing? can you not have been uderstate sthing? can they not have been uderstate sthing?