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