I can pontificate you can pontificate he can pontificate we can pontificate you can pontificate they can pontificate
V-ing form
I can be pontificating you can be pontificating he can be pontificating we can be pontificating you can be pontificating they can be pontificating
Perfect
I can have pontificated you can have pontificated he can have pontificated we can have pontificated you can have pontificated they can have pontificated
V-ing perfect
I can have been pontificating you can have been pontificating he can have been pontificating we can have been pontificating you can have been pontificating they can have been pontificating
Negation
Simple form
I can't pontificate you can't pontificate he can't pontificate we can't pontificate you can't pontificate they can't pontificate
V-ing form
I can't be pontificating you can't be pontificating he can't be pontificating we can't be pontificating you can't be pontificating they can't be pontificating
Perfect
I can't have pontificated you can't have pontificated he can't have pontificated we can't have pontificated you can't have pontificated they can't have pontificated
V-ing perfect
I can't have been pontificating you can't have been pontificating he can't have been pontificating we can't have been pontificating you can't have been pontificating they can't have been pontificating
Interrogative form
Simple form
can I pontificate? can you pontificate? can he pontificate? can we pontificate? can you pontificate? can they pontificate?
V-ing form
can I be pontificating? can you be pontificating? can he be pontificating? can we be pontificating? can you be pontificating? can they be pontificating?
Perfect
can I have pontificated? can you have pontificated? can he have pontificated? can we have pontificated? can you have pontificated? can they have pontificated?
V-ing perfect
can I have been pontificating? can you have been pontificating? can he have been pontificating? can we have been pontificating? can you have been pontificating? can they have been pontificating?
Interro-negative form
Simple form
can't I pontificate? can't you pontificate? can't he pontificate? can't we pontificate? can't you pontificate? can't they pontificate?
V-ing form
can't I be pontificating? can't you be pontificating? can't he be pontificating? can't we be pontificating? can't you be pontificating? can't they be pontificating?
Perfect
can't I have pontificated? can't you have pontificated? can't he have pontificated? can't we have pontificated? can't you have pontificated? can't they have pontificated?
V-ing perfect
can't I have been pontificating? can't you have been pontificating? can't he have been pontificating? can't we have been pontificating? can't you have been pontificating? can't they have been pontificating?