English verb conjugation
COULD SIDE

Regular verb: side - sided - sided

Affirmation

Simple form	V-ing form
I could side you could side he could side we could side you could side they could side	I could be siding you could be siding he could be siding we could be siding you could be siding they could be siding
Perfect	V-ing perfect
I could have sided you could have sided he could have sided we could have sided you could have sided they could have sided	I could have been siding you could have been siding he could have been siding we could have been siding you could have been siding they could have been siding

Negation

Simple form	V-ing form
I couldn't side you couldn't side he couldn't side we couldn't side you couldn't side they couldn't side	I couldn't be siding you couldn't be siding he couldn't be siding we couldn't be siding you couldn't be siding they couldn't be siding
Perfect	V-ing perfect
I couldn't have sided you couldn't have sided he couldn't have sided we couldn't have sided you couldn't have sided they couldn't have sided	I couldn't have been siding you couldn't have been siding he couldn't have been siding we couldn't have been siding you couldn't have been siding they couldn't have been siding

Interrogative form

Simple form	V-ing form
could I side? could you side? could he side? could we side? could you side? could they side?	could I be siding? could you be siding? could he be siding? could we be siding? could you be siding? could they be siding?
Perfect	V-ing perfect
could I have sided? could you have sided? could he have sided? could we have sided? could you have sided? could they have sided?	could I have been siding? could you have been siding? could he have been siding? could we have been siding? could you have been siding? could they have been siding?

Interro-negative form

Simple form	V-ing form
couldn't I side? couldn't you side? couldn't he side? couldn't we side? couldn't you side? couldn't they side?	couldn't I be siding? couldn't you be siding? couldn't he be siding? couldn't we be siding? couldn't you be siding? couldn't they be siding?
Perfect	V-ing perfect
couldn't I have sided? couldn't you have sided? couldn't he have sided? couldn't we have sided? couldn't you have sided? couldn't they have sided?	couldn't I have been siding? couldn't you have been siding? couldn't he have been siding? couldn't we have been siding? couldn't you have been siding? couldn't they have been siding?