English verb conjugation
COULD INFRINGE

Regular verb: infringe - infringed - infringed

Affirmation

Simple form	V-ing form
I could infringe you could infringe she could infringe we could infringe you could infringe they could infringe	I could be infringing you could be infringing she could be infringing we could be infringing you could be infringing they could be infringing
Perfect	V-ing perfect
I could have infringed you could have infringed she could have infringed we could have infringed you could have infringed they could have infringed	I could have been infringing you could have been infringing she could have been infringing we could have been infringing you could have been infringing they could have been infringing

Negation

Simple form	V-ing form
I couldn't infringe you couldn't infringe she couldn't infringe we couldn't infringe you couldn't infringe they couldn't infringe	I couldn't be infringing you couldn't be infringing she couldn't be infringing we couldn't be infringing you couldn't be infringing they couldn't be infringing
Perfect	V-ing perfect
I couldn't have infringed you couldn't have infringed she couldn't have infringed we couldn't have infringed you couldn't have infringed they couldn't have infringed	I couldn't have been infringing you couldn't have been infringing she couldn't have been infringing we couldn't have been infringing you couldn't have been infringing they couldn't have been infringing

Interrogative form

Simple form	V-ing form
could I infringe? could you infringe? could she infringe? could we infringe? could you infringe? could they infringe?	could I be infringing? could you be infringing? could she be infringing? could we be infringing? could you be infringing? could they be infringing?
Perfect	V-ing perfect
could I have infringed? could you have infringed? could she have infringed? could we have infringed? could you have infringed? could they have infringed?	could I have been infringing? could you have been infringing? could she have been infringing? could we have been infringing? could you have been infringing? could they have been infringing?

Interro-negative form

Simple form	V-ing form
couldn't I infringe? couldn't you infringe? couldn't she infringe? couldn't we infringe? couldn't you infringe? couldn't they infringe?	couldn't I be infringing? couldn't you be infringing? couldn't she be infringing? couldn't we be infringing? couldn't you be infringing? couldn't they be infringing?
Perfect	V-ing perfect
couldn't I have infringed? couldn't you have infringed? couldn't she have infringed? couldn't we have infringed? couldn't you have infringed? couldn't they have infringed?	couldn't I have been infringing? couldn't you have been infringing? couldn't she have been infringing? couldn't we have been infringing? couldn't you have been infringing? couldn't they have been infringing?