English verb conjugation
COULD GLEAN

Regular verb: glean - gleaned - gleaned

Affirmation

Simple form	V-ing form
I could glean you could glean she could glean we could glean you could glean they could glean	I could be gleaning you could be gleaning she could be gleaning we could be gleaning you could be gleaning they could be gleaning
Perfect	V-ing perfect
I could have gleaned you could have gleaned she could have gleaned we could have gleaned you could have gleaned they could have gleaned	I could have been gleaning you could have been gleaning she could have been gleaning we could have been gleaning you could have been gleaning they could have been gleaning

Negation

Simple form	V-ing form
I couldn't glean you couldn't glean she couldn't glean we couldn't glean you couldn't glean they couldn't glean	I couldn't be gleaning you couldn't be gleaning she couldn't be gleaning we couldn't be gleaning you couldn't be gleaning they couldn't be gleaning
Perfect	V-ing perfect
I couldn't have gleaned you couldn't have gleaned she couldn't have gleaned we couldn't have gleaned you couldn't have gleaned they couldn't have gleaned	I couldn't have been gleaning you couldn't have been gleaning she couldn't have been gleaning we couldn't have been gleaning you couldn't have been gleaning they couldn't have been gleaning

Interrogative form

Simple form	V-ing form
could I glean? could you glean? could she glean? could we glean? could you glean? could they glean?	could I be gleaning? could you be gleaning? could she be gleaning? could we be gleaning? could you be gleaning? could they be gleaning?
Perfect	V-ing perfect
could I have gleaned? could you have gleaned? could she have gleaned? could we have gleaned? could you have gleaned? could they have gleaned?	could I have been gleaning? could you have been gleaning? could she have been gleaning? could we have been gleaning? could you have been gleaning? could they have been gleaning?

Interro-negative form

Simple form	V-ing form
couldn't I glean? couldn't you glean? couldn't she glean? couldn't we glean? couldn't you glean? couldn't they glean?	couldn't I be gleaning? couldn't you be gleaning? couldn't she be gleaning? couldn't we be gleaning? couldn't you be gleaning? couldn't they be gleaning?
Perfect	V-ing perfect
couldn't I have gleaned? couldn't you have gleaned? couldn't she have gleaned? couldn't we have gleaned? couldn't you have gleaned? couldn't they have gleaned?	couldn't I have been gleaning? couldn't you have been gleaning? couldn't she have been gleaning? couldn't we have been gleaning? couldn't you have been gleaning? couldn't they have been gleaning?