I could rejoice you could rejoice she could rejoice we could rejoice you could rejoice they could rejoice
V-ing form
I could be rejoicing you could be rejoicing she could be rejoicing we could be rejoicing you could be rejoicing they could be rejoicing
Perfect
I could have rejoiced you could have rejoiced she could have rejoiced we could have rejoiced you could have rejoiced they could have rejoiced
V-ing perfect
I could have been rejoicing you could have been rejoicing she could have been rejoicing we could have been rejoicing you could have been rejoicing they could have been rejoicing
Negation
Simple form
I could not rejoice you could not rejoice she could not rejoice we could not rejoice you could not rejoice they could not rejoice
V-ing form
I could not be rejoicing you could not be rejoicing she could not be rejoicing we could not be rejoicing you could not be rejoicing they could not be rejoicing
Perfect
I could not have rejoiced you could not have rejoiced she could not have rejoiced we could not have rejoiced you could not have rejoiced they could not have rejoiced
V-ing perfect
I could not have been rejoicing you could not have been rejoicing she could not have been rejoicing we could not have been rejoicing you could not have been rejoicing they could not have been rejoicing
Interrogative form
Simple form
could I rejoice? could you rejoice? could she rejoice? could we rejoice? could you rejoice? could they rejoice?
V-ing form
could I be rejoicing? could you be rejoicing? could she be rejoicing? could we be rejoicing? could you be rejoicing? could they be rejoicing?
Perfect
could I have rejoiced? could you have rejoiced? could she have rejoiced? could we have rejoiced? could you have rejoiced? could they have rejoiced?
V-ing perfect
could I have been rejoicing? could you have been rejoicing? could she have been rejoicing? could we have been rejoicing? could you have been rejoicing? could they have been rejoicing?
Interro-negative form
Simple form
could I not rejoice? could you not rejoice? could she not rejoice? could we not rejoice? could you not rejoice? could they not rejoice?
V-ing form
could I not be rejoicing? could you not be rejoicing? could she not be rejoicing? could we not be rejoicing? could you not be rejoicing? could they not be rejoicing?
Perfect
could I not have rejoiced? could you not have rejoiced? could she not have rejoiced? could we not have rejoiced? could you not have rejoiced? could they not have rejoiced?
V-ing perfect
could I not have been rejoicing? could you not have been rejoicing? could she not have been rejoicing? could we not have been rejoicing? could you not have been rejoicing? could they not have been rejoicing?