English verb conjugation
COULD INFRINGE

Regular verb: infringe - infringed - infringed

Affirmation

Simple form	V-ing form
I could infringe you could infringe he could infringe we could infringe you could infringe they could infringe	I could be infringing you could be infringing he 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 he 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 he 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 he 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 he 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 he 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 he 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 he infringe? could we infringe? could you infringe? could they infringe?	could I be infringing? could you be infringing? could he 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 he 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 he 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 he 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 he 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 he 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 he have been infringing? couldn't we have been infringing? couldn't you have been infringing? couldn't they have been infringing?