I can launch you can launch she can launch we can launch you can launch they can launch
V-ing form
I can be launching you can be launching she can be launching we can be launching you can be launching they can be launching
Perfect
I can have launched you can have launched she can have launched we can have launched you can have launched they can have launched
V-ing perfect
I can have been launching you can have been launching she can have been launching we can have been launching you can have been launching they can have been launching
Negation
Simple form
I cannot launch you cannot launch she cannot launch we cannot launch you cannot launch they cannot launch
V-ing form
I cannot be launching you cannot be launching she cannot be launching we cannot be launching you cannot be launching they cannot be launching
Perfect
I cannot have launched you cannot have launched she cannot have launched we cannot have launched you cannot have launched they cannot have launched
V-ing perfect
I cannot have been launching you cannot have been launching she cannot have been launching we cannot have been launching you cannot have been launching they cannot have been launching
Interrogative form
Simple form
can I launch? can you launch? can she launch? can we launch? can you launch? can they launch?
V-ing form
can I be launching? can you be launching? can she be launching? can we be launching? can you be launching? can they be launching?
Perfect
can I have launched? can you have launched? can she have launched? can we have launched? can you have launched? can they have launched?
V-ing perfect
can I have been launching? can you have been launching? can she have been launching? can we have been launching? can you have been launching? can they have been launching?
Interro-negative form
Simple form
can I not launch? can you not launch? can she not launch? can we not launch? can you not launch? can they not launch?
V-ing form
can I not be launching? can you not be launching? can she not be launching? can we not be launching? can you not be launching? can they not be launching?
Perfect
can I not have launched? can you not have launched? can she not have launched? can we not have launched? can you not have launched? can they not have launched?
V-ing perfect
can I not have been launching? can you not have been launching? can she not have been launching? can we not have been launching? can you not have been launching? can they not have been launching?