Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I can expert you can expert he can expert we can expert you can expert they can expert
V-ing form
I can be experting you can be experting he can be experting we can be experting you can be experting they can be experting
Perfect
I can have experted you can have experted he can have experted we can have experted you can have experted they can have experted
V-ing perfect
I can have been experting you can have been experting he can have been experting we can have been experting you can have been experting they can have been experting
Negation
Simple form
I can't expert you can't expert he can't expert we can't expert you can't expert they can't expert
V-ing form
I can't be experting you can't be experting he can't be experting we can't be experting you can't be experting they can't be experting
Perfect
I can't have experted you can't have experted he can't have experted we can't have experted you can't have experted they can't have experted
V-ing perfect
I can't have been experting you can't have been experting he can't have been experting we can't have been experting you can't have been experting they can't have been experting
Interrogative form
Simple form
can I expert? can you expert? can he expert? can we expert? can you expert? can they expert?
V-ing form
can I be experting? can you be experting? can he be experting? can we be experting? can you be experting? can they be experting?
Perfect
can I have experted? can you have experted? can he have experted? can we have experted? can you have experted? can they have experted?
V-ing perfect
can I have been experting? can you have been experting? can he have been experting? can we have been experting? can you have been experting? can they have been experting?
Interro-negative form
Simple form
can't I expert? can't you expert? can't he expert? can't we expert? can't you expert? can't they expert?
V-ing form
can't I be experting? can't you be experting? can't he be experting? can't we be experting? can't you be experting? can't they be experting?
Perfect
can't I have experted? can't you have experted? can't he have experted? can't we have experted? can't you have experted? can't they have experted?
V-ing perfect
can't I have been experting? can't you have been experting? can't he have been experting? can't we have been experting? can't you have been experting? can't they have been experting?