I can sough you can sough she can sough we can sough you can sough they can sough
V-ing form
I can be soughing you can be soughing she can be soughing we can be soughing you can be soughing they can be soughing
Perfect
I can have soughed you can have soughed she can have soughed we can have soughed you can have soughed they can have soughed
V-ing perfect
I can have been soughing you can have been soughing she can have been soughing we can have been soughing you can have been soughing they can have been soughing
Negation
Simple form
I cannot sough you cannot sough she cannot sough we cannot sough you cannot sough they cannot sough
V-ing form
I cannot be soughing you cannot be soughing she cannot be soughing we cannot be soughing you cannot be soughing they cannot be soughing
Perfect
I cannot have soughed you cannot have soughed she cannot have soughed we cannot have soughed you cannot have soughed they cannot have soughed
V-ing perfect
I cannot have been soughing you cannot have been soughing she cannot have been soughing we cannot have been soughing you cannot have been soughing they cannot have been soughing
Interrogative form
Simple form
can I sough? can you sough? can she sough? can we sough? can you sough? can they sough?
V-ing form
can I be soughing? can you be soughing? can she be soughing? can we be soughing? can you be soughing? can they be soughing?
Perfect
can I have soughed? can you have soughed? can she have soughed? can we have soughed? can you have soughed? can they have soughed?
V-ing perfect
can I have been soughing? can you have been soughing? can she have been soughing? can we have been soughing? can you have been soughing? can they have been soughing?
Interro-negative form
Simple form
can I not sough? can you not sough? can she not sough? can we not sough? can you not sough? can they not sough?
V-ing form
can I not be soughing? can you not be soughing? can she not be soughing? can we not be soughing? can you not be soughing? can they not be soughing?
Perfect
can I not have soughed? can you not have soughed? can she not have soughed? can we not have soughed? can you not have soughed? can they not have soughed?
V-ing perfect
can I not have been soughing? can you not have been soughing? can she not have been soughing? can we not have been soughing? can you not have been soughing? can they not have been soughing?