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