I can marshal you can marshal he can marshal we can marshal you can marshal they can marshal
V-ing form
I can be marshalling you can be marshalling he can be marshalling we can be marshalling you can be marshalling they can be marshalling
Perfect
I can have marshalled you can have marshalled he can have marshalled we can have marshalled you can have marshalled they can have marshalled
V-ing perfect
I can have been marshalling you can have been marshalling he can have been marshalling we can have been marshalling you can have been marshalling they can have been marshalling
Negation
Simple form
I cannot marshal you cannot marshal he cannot marshal we cannot marshal you cannot marshal they cannot marshal
V-ing form
I cannot be marshalling you cannot be marshalling he cannot be marshalling we cannot be marshalling you cannot be marshalling they cannot be marshalling
Perfect
I cannot have marshalled you cannot have marshalled he cannot have marshalled we cannot have marshalled you cannot have marshalled they cannot have marshalled
V-ing perfect
I cannot have been marshalling you cannot have been marshalling he cannot have been marshalling we cannot have been marshalling you cannot have been marshalling they cannot have been marshalling
Interrogative form
Simple form
can I marshal? can you marshal? can he marshal? can we marshal? can you marshal? can they marshal?
V-ing form
can I be marshalling? can you be marshalling? can he be marshalling? can we be marshalling? can you be marshalling? can they be marshalling?
Perfect
can I have marshalled? can you have marshalled? can he have marshalled? can we have marshalled? can you have marshalled? can they have marshalled?
V-ing perfect
can I have been marshalling? can you have been marshalling? can he have been marshalling? can we have been marshalling? can you have been marshalling? can they have been marshalling?
Interro-negative form
Simple form
can I not marshal? can you not marshal? can he not marshal? can we not marshal? can you not marshal? can they not marshal?
V-ing form
can I not be marshalling? can you not be marshalling? can he not be marshalling? can we not be marshalling? can you not be marshalling? can they not be marshalling?
Perfect
can I not have marshalled? can you not have marshalled? can he not have marshalled? can we not have marshalled? can you not have marshalled? can they not have marshalled?
V-ing perfect
can I not have been marshalling? can you not have been marshalling? can he not have been marshalling? can we not have been marshalling? can you not have been marshalling? can they not have been marshalling?