I can infer you can infer he can infer we can infer you can infer they can infer
V-ing form
I can be inferring you can be inferring he can be inferring we can be inferring you can be inferring they can be inferring
Perfect
I can have inferred you can have inferred he can have inferred we can have inferred you can have inferred they can have inferred
V-ing perfect
I can have been inferring you can have been inferring he can have been inferring we can have been inferring you can have been inferring they can have been inferring
Negation
Simple form
I can't infer you can't infer he can't infer we can't infer you can't infer they can't infer
V-ing form
I can't be inferring you can't be inferring he can't be inferring we can't be inferring you can't be inferring they can't be inferring
Perfect
I can't have inferred you can't have inferred he can't have inferred we can't have inferred you can't have inferred they can't have inferred
V-ing perfect
I can't have been inferring you can't have been inferring he can't have been inferring we can't have been inferring you can't have been inferring they can't have been inferring
Interrogative form
Simple form
can I infer? can you infer? can he infer? can we infer? can you infer? can they infer?
V-ing form
can I be inferring? can you be inferring? can he be inferring? can we be inferring? can you be inferring? can they be inferring?
Perfect
can I have inferred? can you have inferred? can he have inferred? can we have inferred? can you have inferred? can they have inferred?
V-ing perfect
can I have been inferring? can you have been inferring? can he have been inferring? can we have been inferring? can you have been inferring? can they have been inferring?
Interro-negative form
Simple form
can't I infer? can't you infer? can't he infer? can't we infer? can't you infer? can't they infer?
V-ing form
can't I be inferring? can't you be inferring? can't he be inferring? can't we be inferring? can't you be inferring? can't they be inferring?
Perfect
can't I have inferred? can't you have inferred? can't he have inferred? can't we have inferred? can't you have inferred? can't they have inferred?
V-ing perfect
can't I have been inferring? can't you have been inferring? can't he have been inferring? can't we have been inferring? can't you have been inferring? can't they have been inferring?