I could classicize you could classicize she could classicize we could classicize you could classicize they could classicize
V-ing form
I could be classicizing you could be classicizing she could be classicizing we could be classicizing you could be classicizing they could be classicizing
Perfect
I could have classicized you could have classicized she could have classicized we could have classicized you could have classicized they could have classicized
V-ing perfect
I could have been classicizing you could have been classicizing she could have been classicizing we could have been classicizing you could have been classicizing they could have been classicizing
Negation
Simple form
I couldn't classicize you couldn't classicize she couldn't classicize we couldn't classicize you couldn't classicize they couldn't classicize
V-ing form
I couldn't be classicizing you couldn't be classicizing she couldn't be classicizing we couldn't be classicizing you couldn't be classicizing they couldn't be classicizing
Perfect
I couldn't have classicized you couldn't have classicized she couldn't have classicized we couldn't have classicized you couldn't have classicized they couldn't have classicized
V-ing perfect
I couldn't have been classicizing you couldn't have been classicizing she couldn't have been classicizing we couldn't have been classicizing you couldn't have been classicizing they couldn't have been classicizing
Interrogative form
Simple form
could I classicize? could you classicize? could she classicize? could we classicize? could you classicize? could they classicize?
V-ing form
could I be classicizing? could you be classicizing? could she be classicizing? could we be classicizing? could you be classicizing? could they be classicizing?
Perfect
could I have classicized? could you have classicized? could she have classicized? could we have classicized? could you have classicized? could they have classicized?
V-ing perfect
could I have been classicizing? could you have been classicizing? could she have been classicizing? could we have been classicizing? could you have been classicizing? could they have been classicizing?
Interro-negative form
Simple form
couldn't I classicize? couldn't you classicize? couldn't she classicize? couldn't we classicize? couldn't you classicize? couldn't they classicize?
V-ing form
couldn't I be classicizing? couldn't you be classicizing? couldn't she be classicizing? couldn't we be classicizing? couldn't you be classicizing? couldn't they be classicizing?
Perfect
couldn't I have classicized? couldn't you have classicized? couldn't she have classicized? couldn't we have classicized? couldn't you have classicized? couldn't they have classicized?
V-ing perfect
couldn't I have been classicizing? couldn't you have been classicizing? couldn't she have been classicizing? couldn't we have been classicizing? couldn't you have been classicizing? couldn't they have been classicizing?