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