English verb conjugation
CAN SOUR

Regular verb: sour - soured - soured

Affirmation

Simple form	V-ing form
I can sour you can sour he can sour we can sour you can sour they can sour	I can be souring you can be souring he can be souring we can be souring you can be souring they can be souring
Perfect	V-ing perfect
I can have soured you can have soured he can have soured we can have soured you can have soured they can have soured	I can have been souring you can have been souring he can have been souring we can have been souring you can have been souring they can have been souring

Negation

Simple form	V-ing form
I can't sour you can't sour he can't sour we can't sour you can't sour they can't sour	I can't be souring you can't be souring he can't be souring we can't be souring you can't be souring they can't be souring
Perfect	V-ing perfect
I can't have soured you can't have soured he can't have soured we can't have soured you can't have soured they can't have soured	I can't have been souring you can't have been souring he can't have been souring we can't have been souring you can't have been souring they can't have been souring

Interrogative form

Simple form	V-ing form
can I sour? can you sour? can he sour? can we sour? can you sour? can they sour?	can I be souring? can you be souring? can he be souring? can we be souring? can you be souring? can they be souring?
Perfect	V-ing perfect
can I have soured? can you have soured? can he have soured? can we have soured? can you have soured? can they have soured?	can I have been souring? can you have been souring? can he have been souring? can we have been souring? can you have been souring? can they have been souring?

Interro-negative form

Simple form	V-ing form
can't I sour? can't you sour? can't he sour? can't we sour? can't you sour? can't they sour?	can't I be souring? can't you be souring? can't he be souring? can't we be souring? can't you be souring? can't they be souring?
Perfect	V-ing perfect
can't I have soured? can't you have soured? can't he have soured? can't we have soured? can't you have soured? can't they have soured?	can't I have been souring? can't you have been souring? can't he have been souring? can't we have been souring? can't you have been souring? can't they have been souring?