I can seethe you can seethe she can seethe we can seethe you can seethe they can seethe
V-ing form
I can be seething you can be seething she can be seething we can be seething you can be seething they can be seething
Perfect
I can have seethed you can have seethed she can have seethed we can have seethed you can have seethed they can have seethed
V-ing perfect
I can have been seething you can have been seething she can have been seething we can have been seething you can have been seething they can have been seething
Negation
Simple form
I can't seethe you can't seethe she can't seethe we can't seethe you can't seethe they can't seethe
V-ing form
I can't be seething you can't be seething she can't be seething we can't be seething you can't be seething they can't be seething
Perfect
I can't have seethed you can't have seethed she can't have seethed we can't have seethed you can't have seethed they can't have seethed
V-ing perfect
I can't have been seething you can't have been seething she can't have been seething we can't have been seething you can't have been seething they can't have been seething
Interrogative form
Simple form
can I seethe? can you seethe? can she seethe? can we seethe? can you seethe? can they seethe?
V-ing form
can I be seething? can you be seething? can she be seething? can we be seething? can you be seething? can they be seething?
Perfect
can I have seethed? can you have seethed? can she have seethed? can we have seethed? can you have seethed? can they have seethed?
V-ing perfect
can I have been seething? can you have been seething? can she have been seething? can we have been seething? can you have been seething? can they have been seething?
Interro-negative form
Simple form
can't I seethe? can't you seethe? can't she seethe? can't we seethe? can't you seethe? can't they seethe?
V-ing form
can't I be seething? can't you be seething? can't she be seething? can't we be seething? can't you be seething? can't they be seething?
Perfect
can't I have seethed? can't you have seethed? can't she have seethed? can't we have seethed? can't you have seethed? can't they have seethed?
V-ing perfect
can't I have been seething? can't you have been seething? can't she have been seething? can't we have been seething? can't you have been seething? can't they have been seething?