English verb conjugation
COULD EMPLANE

Regular verb: emplane - emplaned - emplaned

Affirmation

Simple form	V-ing form
I could emplane you could emplane she could emplane we could emplane you could emplane they could emplane	I could be emplaning you could be emplaning she could be emplaning we could be emplaning you could be emplaning they could be emplaning
Perfect	V-ing perfect
I could have emplaned you could have emplaned she could have emplaned we could have emplaned you could have emplaned they could have emplaned	I could have been emplaning you could have been emplaning she could have been emplaning we could have been emplaning you could have been emplaning they could have been emplaning

Negation

Simple form	V-ing form
I couldn't emplane you couldn't emplane she couldn't emplane we couldn't emplane you couldn't emplane they couldn't emplane	I couldn't be emplaning you couldn't be emplaning she couldn't be emplaning we couldn't be emplaning you couldn't be emplaning they couldn't be emplaning
Perfect	V-ing perfect
I couldn't have emplaned you couldn't have emplaned she couldn't have emplaned we couldn't have emplaned you couldn't have emplaned they couldn't have emplaned	I couldn't have been emplaning you couldn't have been emplaning she couldn't have been emplaning we couldn't have been emplaning you couldn't have been emplaning they couldn't have been emplaning

Interrogative form

Simple form	V-ing form
could I emplane? could you emplane? could she emplane? could we emplane? could you emplane? could they emplane?	could I be emplaning? could you be emplaning? could she be emplaning? could we be emplaning? could you be emplaning? could they be emplaning?
Perfect	V-ing perfect
could I have emplaned? could you have emplaned? could she have emplaned? could we have emplaned? could you have emplaned? could they have emplaned?	could I have been emplaning? could you have been emplaning? could she have been emplaning? could we have been emplaning? could you have been emplaning? could they have been emplaning?

Interro-negative form

Simple form	V-ing form
couldn't I emplane? couldn't you emplane? couldn't she emplane? couldn't we emplane? couldn't you emplane? couldn't they emplane?	couldn't I be emplaning? couldn't you be emplaning? couldn't she be emplaning? couldn't we be emplaning? couldn't you be emplaning? couldn't they be emplaning?
Perfect	V-ing perfect
couldn't I have emplaned? couldn't you have emplaned? couldn't she have emplaned? couldn't we have emplaned? couldn't you have emplaned? couldn't they have emplaned?	couldn't I have been emplaning? couldn't you have been emplaning? couldn't she have been emplaning? couldn't we have been emplaning? couldn't you have been emplaning? couldn't they have been emplaning?