I can burke you can burke she can burke we can burke you can burke they can burke
V-ing form
I can be burking you can be burking she can be burking we can be burking you can be burking they can be burking
Perfect
I can have burked you can have burked she can have burked we can have burked you can have burked they can have burked
V-ing perfect
I can have been burking you can have been burking she can have been burking we can have been burking you can have been burking they can have been burking
Negation
Simple form
I cannot burke you cannot burke she cannot burke we cannot burke you cannot burke they cannot burke
V-ing form
I cannot be burking you cannot be burking she cannot be burking we cannot be burking you cannot be burking they cannot be burking
Perfect
I cannot have burked you cannot have burked she cannot have burked we cannot have burked you cannot have burked they cannot have burked
V-ing perfect
I cannot have been burking you cannot have been burking she cannot have been burking we cannot have been burking you cannot have been burking they cannot have been burking
Interrogative form
Simple form
can I burke? can you burke? can she burke? can we burke? can you burke? can they burke?
V-ing form
can I be burking? can you be burking? can she be burking? can we be burking? can you be burking? can they be burking?
Perfect
can I have burked? can you have burked? can she have burked? can we have burked? can you have burked? can they have burked?
V-ing perfect
can I have been burking? can you have been burking? can she have been burking? can we have been burking? can you have been burking? can they have been burking?
Interro-negative form
Simple form
can I not burke? can you not burke? can she not burke? can we not burke? can you not burke? can they not burke?
V-ing form
can I not be burking? can you not be burking? can she not be burking? can we not be burking? can you not be burking? can they not be burking?
Perfect
can I not have burked? can you not have burked? can she not have burked? can we not have burked? can you not have burked? can they not have burked?
V-ing perfect
can I not have been burking? can you not have been burking? can she not have been burking? can we not have been burking? can you not have been burking? can they not have been burking?