English verb conjugation COULD RICHEN

Regular verb: richen - richened - richened

Affirmation

Simple form

I could richen
you could richen
she could richen
we could richen
you could richen
they could richen

V-ing form

I could be richening
you could be richening
she could be richening
we could be richening
you could be richening
they could be richening

Perfect

I could have richened
you could have richened
she could have richened
we could have richened
you could have richened
they could have richened

V-ing perfect

I could have been richening
you could have been richening
she could have been richening
we could have been richening
you could have been richening
they could have been richening

Negation

Simple form

I couldn't richen
you couldn't richen
she couldn't richen
we couldn't richen
you couldn't richen
they couldn't richen

V-ing form

I couldn't be richening
you couldn't be richening
she couldn't be richening
we couldn't be richening
you couldn't be richening
they couldn't be richening

Perfect

I couldn't have richened
you couldn't have richened
she couldn't have richened
we couldn't have richened
you couldn't have richened
they couldn't have richened

V-ing perfect

I couldn't have been richening
you couldn't have been richening
she couldn't have been richening
we couldn't have been richening
you couldn't have been richening
they couldn't have been richening

Interrogative form

Simple form

could I richen?
could you richen?
could she richen?
could we richen?
could you richen?
could they richen?

V-ing form

could I be richening?
could you be richening?
could she be richening?
could we be richening?
could you be richening?
could they be richening?

Perfect

could I have richened?
could you have richened?
could she have richened?
could we have richened?
could you have richened?
could they have richened?

V-ing perfect

could I have been richening?
could you have been richening?
could she have been richening?
could we have been richening?
could you have been richening?
could they have been richening?

Interro-negative form

Simple form

couldn't I richen?
couldn't you richen?
couldn't she richen?
couldn't we richen?
couldn't you richen?
couldn't they richen?

V-ing form

couldn't I be richening?
couldn't you be richening?
couldn't she be richening?
couldn't we be richening?
couldn't you be richening?
couldn't they be richening?

Perfect

couldn't I have richened?
couldn't you have richened?
couldn't she have richened?
couldn't we have richened?
couldn't you have richened?
couldn't they have richened?

V-ing perfect

couldn't I have been richening?
couldn't you have been richening?
couldn't she have been richening?
couldn't we have been richening?
couldn't you have been richening?
couldn't they have been richening?

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