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