I could platitudinize you could platitudinize he could platitudinize we could platitudinize you could platitudinize they could platitudinize
V-ing form
I could be platitudinizing you could be platitudinizing he could be platitudinizing we could be platitudinizing you could be platitudinizing they could be platitudinizing
Perfect
I could have platitudinized you could have platitudinized he could have platitudinized we could have platitudinized you could have platitudinized they could have platitudinized
V-ing perfect
I could have been platitudinizing you could have been platitudinizing he could have been platitudinizing we could have been platitudinizing you could have been platitudinizing they could have been platitudinizing
Negation
Simple form
I could not platitudinize you could not platitudinize he could not platitudinize we could not platitudinize you could not platitudinize they could not platitudinize
V-ing form
I could not be platitudinizing you could not be platitudinizing he could not be platitudinizing we could not be platitudinizing you could not be platitudinizing they could not be platitudinizing
Perfect
I could not have platitudinized you could not have platitudinized he could not have platitudinized we could not have platitudinized you could not have platitudinized they could not have platitudinized
V-ing perfect
I could not have been platitudinizing you could not have been platitudinizing he could not have been platitudinizing we could not have been platitudinizing you could not have been platitudinizing they could not have been platitudinizing
Interrogative form
Simple form
could I platitudinize? could you platitudinize? could he platitudinize? could we platitudinize? could you platitudinize? could they platitudinize?
V-ing form
could I be platitudinizing? could you be platitudinizing? could he be platitudinizing? could we be platitudinizing? could you be platitudinizing? could they be platitudinizing?
Perfect
could I have platitudinized? could you have platitudinized? could he have platitudinized? could we have platitudinized? could you have platitudinized? could they have platitudinized?
V-ing perfect
could I have been platitudinizing? could you have been platitudinizing? could he have been platitudinizing? could we have been platitudinizing? could you have been platitudinizing? could they have been platitudinizing?
Interro-negative form
Simple form
could I not platitudinize? could you not platitudinize? could he not platitudinize? could we not platitudinize? could you not platitudinize? could they not platitudinize?
V-ing form
could I not be platitudinizing? could you not be platitudinizing? could he not be platitudinizing? could we not be platitudinizing? could you not be platitudinizing? could they not be platitudinizing?
Perfect
could I not have platitudinized? could you not have platitudinized? could he not have platitudinized? could we not have platitudinized? could you not have platitudinized? could they not have platitudinized?
V-ing perfect
could I not have been platitudinizing? could you not have been platitudinizing? could he not have been platitudinizing? could we not have been platitudinizing? could you not have been platitudinizing? could they not have been platitudinizing?