English verb conjugation
CAN STALE

Regular verb: stale - staled - staled

Affirmation

Simple form	V-ing form
I can stale you can stale she can stale we can stale you can stale they can stale	I can be staling you can be staling she can be staling we can be staling you can be staling they can be staling
Perfect	V-ing perfect
I can have staled you can have staled she can have staled we can have staled you can have staled they can have staled	I can have been staling you can have been staling she can have been staling we can have been staling you can have been staling they can have been staling

Negation

Simple form	V-ing form
I can't stale you can't stale she can't stale we can't stale you can't stale they can't stale	I can't be staling you can't be staling she can't be staling we can't be staling you can't be staling they can't be staling
Perfect	V-ing perfect
I can't have staled you can't have staled she can't have staled we can't have staled you can't have staled they can't have staled	I can't have been staling you can't have been staling she can't have been staling we can't have been staling you can't have been staling they can't have been staling

Interrogative form

Simple form	V-ing form
can I stale? can you stale? can she stale? can we stale? can you stale? can they stale?	can I be staling? can you be staling? can she be staling? can we be staling? can you be staling? can they be staling?
Perfect	V-ing perfect
can I have staled? can you have staled? can she have staled? can we have staled? can you have staled? can they have staled?	can I have been staling? can you have been staling? can she have been staling? can we have been staling? can you have been staling? can they have been staling?

Interro-negative form

Simple form	V-ing form
can't I stale? can't you stale? can't she stale? can't we stale? can't you stale? can't they stale?	can't I be staling? can't you be staling? can't she be staling? can't we be staling? can't you be staling? can't they be staling?
Perfect	V-ing perfect
can't I have staled? can't you have staled? can't she have staled? can't we have staled? can't you have staled? can't they have staled?	can't I have been staling? can't you have been staling? can't she have been staling? can't we have been staling? can't you have been staling? can't they have been staling?