I can ballast you can ballast he can ballast we can ballast you can ballast they can ballast
V-ing form
I can be ballasting you can be ballasting he can be ballasting we can be ballasting you can be ballasting they can be ballasting
Perfect
I can have ballasted you can have ballasted he can have ballasted we can have ballasted you can have ballasted they can have ballasted
V-ing perfect
I can have been ballasting you can have been ballasting he can have been ballasting we can have been ballasting you can have been ballasting they can have been ballasting
Negation
Simple form
I can't ballast you can't ballast he can't ballast we can't ballast you can't ballast they can't ballast
V-ing form
I can't be ballasting you can't be ballasting he can't be ballasting we can't be ballasting you can't be ballasting they can't be ballasting
Perfect
I can't have ballasted you can't have ballasted he can't have ballasted we can't have ballasted you can't have ballasted they can't have ballasted
V-ing perfect
I can't have been ballasting you can't have been ballasting he can't have been ballasting we can't have been ballasting you can't have been ballasting they can't have been ballasting
Interrogative form
Simple form
can I ballast? can you ballast? can he ballast? can we ballast? can you ballast? can they ballast?
V-ing form
can I be ballasting? can you be ballasting? can he be ballasting? can we be ballasting? can you be ballasting? can they be ballasting?
Perfect
can I have ballasted? can you have ballasted? can he have ballasted? can we have ballasted? can you have ballasted? can they have ballasted?
V-ing perfect
can I have been ballasting? can you have been ballasting? can he have been ballasting? can we have been ballasting? can you have been ballasting? can they have been ballasting?
Interro-negative form
Simple form
can't I ballast? can't you ballast? can't he ballast? can't we ballast? can't you ballast? can't they ballast?
V-ing form
can't I be ballasting? can't you be ballasting? can't he be ballasting? can't we be ballasting? can't you be ballasting? can't they be ballasting?
Perfect
can't I have ballasted? can't you have ballasted? can't he have ballasted? can't we have ballasted? can't you have ballasted? can't they have ballasted?
V-ing perfect
can't I have been ballasting? can't you have been ballasting? can't he have been ballasting? can't we have been ballasting? can't you have been ballasting? can't they have been ballasting?