I can behead you can behead she can behead we can behead you can behead they can behead
V-ing form
I can be beheading you can be beheading she can be beheading we can be beheading you can be beheading they can be beheading
Perfect
I can have beheaded you can have beheaded she can have beheaded we can have beheaded you can have beheaded they can have beheaded
V-ing perfect
I can have been beheading you can have been beheading she can have been beheading we can have been beheading you can have been beheading they can have been beheading
Negation
Simple form
I cannot behead you cannot behead she cannot behead we cannot behead you cannot behead they cannot behead
V-ing form
I cannot be beheading you cannot be beheading she cannot be beheading we cannot be beheading you cannot be beheading they cannot be beheading
Perfect
I cannot have beheaded you cannot have beheaded she cannot have beheaded we cannot have beheaded you cannot have beheaded they cannot have beheaded
V-ing perfect
I cannot have been beheading you cannot have been beheading she cannot have been beheading we cannot have been beheading you cannot have been beheading they cannot have been beheading
Interrogative form
Simple form
can I behead? can you behead? can she behead? can we behead? can you behead? can they behead?
V-ing form
can I be beheading? can you be beheading? can she be beheading? can we be beheading? can you be beheading? can they be beheading?
Perfect
can I have beheaded? can you have beheaded? can she have beheaded? can we have beheaded? can you have beheaded? can they have beheaded?
V-ing perfect
can I have been beheading? can you have been beheading? can she have been beheading? can we have been beheading? can you have been beheading? can they have been beheading?
Interro-negative form
Simple form
can I not behead? can you not behead? can she not behead? can we not behead? can you not behead? can they not behead?
V-ing form
can I not be beheading? can you not be beheading? can she not be beheading? can we not be beheading? can you not be beheading? can they not be beheading?
Perfect
can I not have beheaded? can you not have beheaded? can she not have beheaded? can we not have beheaded? can you not have beheaded? can they not have beheaded?
V-ing perfect
can I not have been beheading? can you not have been beheading? can she not have been beheading? can we not have been beheading? can you not have been beheading? can they not have been beheading?