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 can't uderstate sth you can't uderstate sth he can't uderstate sth we can't uderstate sth you can't uderstate sth they can't uderstate sth
V-ing form
I can't be uderstate sthing you can't be uderstate sthing he can't be uderstate sthing we can't be uderstate sthing you can't be uderstate sthing they can't be uderstate sthing
Perfect
I can't have uderstate sthed you can't have uderstate sthed he can't have uderstate sthed we can't have uderstate sthed you can't have uderstate sthed they can't have uderstate sthed
V-ing perfect
I can't have been uderstate sthing you can't have been uderstate sthing he can't have been uderstate sthing we can't have been uderstate sthing you can't have been uderstate sthing they can't 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't I uderstate sth? can't you uderstate sth? can't he uderstate sth? can't we uderstate sth? can't you uderstate sth? can't they uderstate sth?
V-ing form
can't I be uderstate sthing? can't you be uderstate sthing? can't he be uderstate sthing? can't we be uderstate sthing? can't you be uderstate sthing? can't they be uderstate sthing?
Perfect
can't I have uderstate sthed? can't you have uderstate sthed? can't he have uderstate sthed? can't we have uderstate sthed? can't you have uderstate sthed? can't they have uderstate sthed?
V-ing perfect
can't I have been uderstate sthing? can't you have been uderstate sthing? can't he have been uderstate sthing? can't we have been uderstate sthing? can't you have been uderstate sthing? can't they have been uderstate sthing?