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