can upright
Regular verb: upright - uprighted- uprighted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can upright
you can upright
he can upright
we can upright
you can upright
they can upright 	I can be uprighting
you can be uprighting
he can be uprighting
we can be uprighting
you can be uprighting
they can be uprighting	I can have uprighted
you can have uprighted
he can have uprighted
we can have uprighted
you can have uprighted
they can have uprighted	I can have been uprighting
you can have been uprighting
he can have been uprighting
we can have been uprighting
you can have been uprighting
they can have been uprighting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't upright
you can't upright
he can't upright
we can't upright
you can't upright
they can't upright 	I can't be uprighting
you can't be uprighting
he can't be uprighting
we can't be uprighting
you can't be uprighting
they can't be uprighting	I can't have uprighted
you can't have uprighted
he can't have uprighted
we can't have uprighted
you can't have uprighted
they can't have uprighted	I can't have been uprighting
you can't have been uprighting
he can't have been uprighting
we can't have been uprighting
you can't have been uprighting
they can't have been uprighting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I upright?
can you upright?
can he upright?
can we upright?
can you upright?
can they upright? 	can I be uprighting?
can you be uprighting?
can he be uprighting?
can we be uprighting?
can you be uprighting?
can they be uprighting? 	can I have uprighted?
can you have uprighted?
can he have uprighted?
can we have uprighted?
can you have uprighted?
can they have uprighted? 	can I have been uprighting?
can you have been uprighting?
can he have been uprighting?
can we have been uprighting?
can you have been uprighting?
can they have been uprighting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I upright?
can't you upright?
can't he upright?
can't we upright?
can't you upright?
can't they upright? 	can't I be uprighting?
can't you be uprighting?
can't he be uprighting?
can't we be uprighting?
can't you be uprighting?
can't they be uprighting? 	can't I have uprighted?
can't you have uprighted?
can't he have uprighted?
can't we have uprighted?
can't you have uprighted?
can't they have uprighted? 	can't I have been uprighting?
can't you have been uprighting?
can't he have been uprighting?
can't we have been uprighting?
can't you have been uprighting?
can't they have been uprighting?