English verb conjugation
COULD TEND

Regular verb: tend - tended - tended

Affirmation

Simple form	V-ing form
I could tend you could tend she could tend we could tend you could tend they could tend	I could be tending you could be tending she could be tending we could be tending you could be tending they could be tending
Perfect	V-ing perfect
I could have tended you could have tended she could have tended we could have tended you could have tended they could have tended	I could have been tending you could have been tending she could have been tending we could have been tending you could have been tending they could have been tending

Negation

Simple form	V-ing form
I couldn't tend you couldn't tend she couldn't tend we couldn't tend you couldn't tend they couldn't tend	I couldn't be tending you couldn't be tending she couldn't be tending we couldn't be tending you couldn't be tending they couldn't be tending
Perfect	V-ing perfect
I couldn't have tended you couldn't have tended she couldn't have tended we couldn't have tended you couldn't have tended they couldn't have tended	I couldn't have been tending you couldn't have been tending she couldn't have been tending we couldn't have been tending you couldn't have been tending they couldn't have been tending

Interrogative form

Simple form	V-ing form
could I tend? could you tend? could she tend? could we tend? could you tend? could they tend?	could I be tending? could you be tending? could she be tending? could we be tending? could you be tending? could they be tending?
Perfect	V-ing perfect
could I have tended? could you have tended? could she have tended? could we have tended? could you have tended? could they have tended?	could I have been tending? could you have been tending? could she have been tending? could we have been tending? could you have been tending? could they have been tending?

Interro-negative form

Simple form	V-ing form
couldn't I tend? couldn't you tend? couldn't she tend? couldn't we tend? couldn't you tend? couldn't they tend?	couldn't I be tending? couldn't you be tending? couldn't she be tending? couldn't we be tending? couldn't you be tending? couldn't they be tending?
Perfect	V-ing perfect
couldn't I have tended? couldn't you have tended? couldn't she have tended? couldn't we have tended? couldn't you have tended? couldn't they have tended?	couldn't I have been tending? couldn't you have been tending? couldn't she have been tending? couldn't we have been tending? couldn't you have been tending? couldn't they have been tending?