I can tog you can tog he can tog we can tog you can tog they can tog
V-ing form
I can be togging you can be togging he can be togging we can be togging you can be togging they can be togging
Perfect
I can have togged you can have togged he can have togged we can have togged you can have togged they can have togged
V-ing perfect
I can have been togging you can have been togging he can have been togging we can have been togging you can have been togging they can have been togging
Negation
Simple form
I cannot tog you cannot tog he cannot tog we cannot tog you cannot tog they cannot tog
V-ing form
I cannot be togging you cannot be togging he cannot be togging we cannot be togging you cannot be togging they cannot be togging
Perfect
I cannot have togged you cannot have togged he cannot have togged we cannot have togged you cannot have togged they cannot have togged
V-ing perfect
I cannot have been togging you cannot have been togging he cannot have been togging we cannot have been togging you cannot have been togging they cannot have been togging
Interrogative form
Simple form
can I tog? can you tog? can he tog? can we tog? can you tog? can they tog?
V-ing form
can I be togging? can you be togging? can he be togging? can we be togging? can you be togging? can they be togging?
Perfect
can I have togged? can you have togged? can he have togged? can we have togged? can you have togged? can they have togged?
V-ing perfect
can I have been togging? can you have been togging? can he have been togging? can we have been togging? can you have been togging? can they have been togging?
Interro-negative form
Simple form
can I not tog? can you not tog? can he not tog? can we not tog? can you not tog? can they not tog?
V-ing form
can I not be togging? can you not be togging? can he not be togging? can we not be togging? can you not be togging? can they not be togging?
Perfect
can I not have togged? can you not have togged? can he not have togged? can we not have togged? can you not have togged? can they not have togged?
V-ing perfect
can I not have been togging? can you not have been togging? can he not have been togging? can we not have been togging? can you not have been togging? can they not have been togging?