I can precede you can precede she can precede we can precede you can precede they can precede
V-ing form
I can be preceding you can be preceding she can be preceding we can be preceding you can be preceding they can be preceding
Perfect
I can have preceded you can have preceded she can have preceded we can have preceded you can have preceded they can have preceded
V-ing perfect
I can have been preceding you can have been preceding she can have been preceding we can have been preceding you can have been preceding they can have been preceding
Negation
Simple form
I can't precede you can't precede she can't precede we can't precede you can't precede they can't precede
V-ing form
I can't be preceding you can't be preceding she can't be preceding we can't be preceding you can't be preceding they can't be preceding
Perfect
I can't have preceded you can't have preceded she can't have preceded we can't have preceded you can't have preceded they can't have preceded
V-ing perfect
I can't have been preceding you can't have been preceding she can't have been preceding we can't have been preceding you can't have been preceding they can't have been preceding
Interrogative form
Simple form
can I precede? can you precede? can she precede? can we precede? can you precede? can they precede?
V-ing form
can I be preceding? can you be preceding? can she be preceding? can we be preceding? can you be preceding? can they be preceding?
Perfect
can I have preceded? can you have preceded? can she have preceded? can we have preceded? can you have preceded? can they have preceded?
V-ing perfect
can I have been preceding? can you have been preceding? can she have been preceding? can we have been preceding? can you have been preceding? can they have been preceding?
Interro-negative form
Simple form
can't I precede? can't you precede? can't she precede? can't we precede? can't you precede? can't they precede?
V-ing form
can't I be preceding? can't you be preceding? can't she be preceding? can't we be preceding? can't you be preceding? can't they be preceding?
Perfect
can't I have preceded? can't you have preceded? can't she have preceded? can't we have preceded? can't you have preceded? can't they have preceded?
V-ing perfect
can't I have been preceding? can't you have been preceding? can't she have been preceding? can't we have been preceding? can't you have been preceding? can't they have been preceding?