I can overcast you can overcast he can overcast we can overcast you can overcast they can overcast
V-ing form
I can be overcasting you can be overcasting he can be overcasting we can be overcasting you can be overcasting they can be overcasting
Perfect
I can have overcasted you can have overcasted he can have overcasted we can have overcasted you can have overcasted they can have overcasted
V-ing perfect
I can have been overcasting you can have been overcasting he can have been overcasting we can have been overcasting you can have been overcasting they can have been overcasting
Negation
Simple form
I can't overcast you can't overcast he can't overcast we can't overcast you can't overcast they can't overcast
V-ing form
I can't be overcasting you can't be overcasting he can't be overcasting we can't be overcasting you can't be overcasting they can't be overcasting
Perfect
I can't have overcasted you can't have overcasted he can't have overcasted we can't have overcasted you can't have overcasted they can't have overcasted
V-ing perfect
I can't have been overcasting you can't have been overcasting he can't have been overcasting we can't have been overcasting you can't have been overcasting they can't have been overcasting
Interrogative form
Simple form
can I overcast? can you overcast? can he overcast? can we overcast? can you overcast? can they overcast?
V-ing form
can I be overcasting? can you be overcasting? can he be overcasting? can we be overcasting? can you be overcasting? can they be overcasting?
Perfect
can I have overcasted? can you have overcasted? can he have overcasted? can we have overcasted? can you have overcasted? can they have overcasted?
V-ing perfect
can I have been overcasting? can you have been overcasting? can he have been overcasting? can we have been overcasting? can you have been overcasting? can they have been overcasting?
Interro-negative form
Simple form
can't I overcast? can't you overcast? can't he overcast? can't we overcast? can't you overcast? can't they overcast?
V-ing form
can't I be overcasting? can't you be overcasting? can't he be overcasting? can't we be overcasting? can't you be overcasting? can't they be overcasting?
Perfect
can't I have overcasted? can't you have overcasted? can't he have overcasted? can't we have overcasted? can't you have overcasted? can't they have overcasted?
V-ing perfect
can't I have been overcasting? can't you have been overcasting? can't he have been overcasting? can't we have been overcasting? can't you have been overcasting? can't they have been overcasting?