I may japan you may japan he may japan we may japan you may japan they may japan
V-ing form
I may be japaning you may be japaning he may be japaning we may be japaning you may be japaning they may be japaning
Perfect
I may have japaned you may have japaned he may have japaned we may have japaned you may have japaned they may have japaned
V-ing perfect
I may have been japaning you may have been japaning he may have been japaning we may have been japaning you may have been japaning they may have been japaning
Negation
Simple form
I may not japan you may not japan he may not japan we may not japan you may not japan they may not japan
V-ing form
I may not be japaning you may not be japaning he may not be japaning we may not be japaning you may not be japaning they may not be japaning
Perfect
I may not have japaned you may not have japaned he may not have japaned we may not have japaned you may not have japaned they may not have japaned
V-ing perfect
I may not have been japaning you may not have been japaning he may not have been japaning we may not have been japaning you may not have been japaning they may not have been japaning
Interrogative form
Simple form
may I japan? may you japan? may he japan? may we japan? may you japan? may they japan?
V-ing form
may I be japaning? may you be japaning? may he be japaning? may we be japaning? may you be japaning? may they be japaning?
Perfect
may I have japaned? may you have japaned? may he have japaned? may we have japaned? may you have japaned? may they have japaned?
V-ing perfect
may I have been japaning? may you have been japaning? may he have been japaning? may we have been japaning? may you have been japaning? may they have been japaning?
Interro-negative form
Simple form
may I not japan? may you not japan? may he not japan? may we not japan? may you not japan? may they not japan?
V-ing form
may I not be japaning? may you not be japaning? may he not be japaning? may we not be japaning? may you not be japaning? may they not be japaning?
Perfect
may I not have japaned? may you not have japaned? may he not have japaned? may we not have japaned? may you not have japaned? may they not have japaned?
V-ing perfect
may I not have been japaning? may you not have been japaning? may he not have been japaning? may we not have been japaning? may you not have been japaning? may they not have been japaning?