I can masticate you can masticate she can masticate we can masticate you can masticate they can masticate
V-ing form
I can be masticating you can be masticating she can be masticating we can be masticating you can be masticating they can be masticating
Perfect
I can have masticated you can have masticated she can have masticated we can have masticated you can have masticated they can have masticated
V-ing perfect
I can have been masticating you can have been masticating she can have been masticating we can have been masticating you can have been masticating they can have been masticating
Negation
Simple form
I cannot masticate you cannot masticate she cannot masticate we cannot masticate you cannot masticate they cannot masticate
V-ing form
I cannot be masticating you cannot be masticating she cannot be masticating we cannot be masticating you cannot be masticating they cannot be masticating
Perfect
I cannot have masticated you cannot have masticated she cannot have masticated we cannot have masticated you cannot have masticated they cannot have masticated
V-ing perfect
I cannot have been masticating you cannot have been masticating she cannot have been masticating we cannot have been masticating you cannot have been masticating they cannot have been masticating
Interrogative form
Simple form
can I masticate? can you masticate? can she masticate? can we masticate? can you masticate? can they masticate?
V-ing form
can I be masticating? can you be masticating? can she be masticating? can we be masticating? can you be masticating? can they be masticating?
Perfect
can I have masticated? can you have masticated? can she have masticated? can we have masticated? can you have masticated? can they have masticated?
V-ing perfect
can I have been masticating? can you have been masticating? can she have been masticating? can we have been masticating? can you have been masticating? can they have been masticating?
Interro-negative form
Simple form
can I not masticate? can you not masticate? can she not masticate? can we not masticate? can you not masticate? can they not masticate?
V-ing form
can I not be masticating? can you not be masticating? can she not be masticating? can we not be masticating? can you not be masticating? can they not be masticating?
Perfect
can I not have masticated? can you not have masticated? can she not have masticated? can we not have masticated? can you not have masticated? can they not have masticated?
V-ing perfect
can I not have been masticating? can you not have been masticating? can she not have been masticating? can we not have been masticating? can you not have been masticating? can they not have been masticating?