Indicative
Present Indefinite
I concern
you concern
he/she/it concerns
we concern
you concern
they concern
Present Continuous
I am concerning
you are concerning
he/she/it is concerning
we are concerning
you are concerning
they are concerning
Present Perfect
I have concerned
you have concerned
he/she/it has concerned
we have concerned
you have concerned
they have concerned
Present Perfect Continuous
I have been concerning
you have been concerning
he/she/it has been concerning
we have been concerning
you have been concerning
they have been concerning
Past Indefinite
I concerned
you concerned
he/she/it concerned
we concerned
you concerned
they concerned
Past Continuous
I was concerning
you were concerning
he/she/it was concerning
we were concerning
you were concerning
they were concerning
Past Perfect
I had concerned
you had concerned
he/she/it had concerned
we had concerned
you had concerned
they had concerned
Past Perfect Continuous
I had been concerning
you had been concerning
he/she/it had been concerning
we had been concerning
you had been concerning
they had been concerning
Future Indefinite
I will concern
you will concern
he/she/it will concern
we will concern
you will concern
they will concern
Future Continuous
I will be concerning
you will be concerning
he/she/it will be concerning
we will be concerning
you will be concerning
they will be concerning
Future Perfect
I will have concerned
you will have concerned
he/she/it will have concerned
we will have concerned
you will have concerned
they will have concerned
Future Perfect Continuous
I will have been concerning
you will have been concerning
he/she/it will have been concerning
we will have been concerning
you will have been concerning
they will have been concerning
Conditional
Conditional Present
I would concern
you would concern
he/she/it would concern
we would concern
you would concern
they would concern
Conditional Present Continuous
I would be concerning
you would be concerning
he/she/it would be concerning
we would be concerning
you would be concerning
they would be concerning
Conditional Perfect
I would have concerned
you would have concerned
he/she/it would have concerned
we would have concerned
you would have concerned
they would have concerned
Conditional Perfect Continuous
I would have been concerning
you would have been concerning
he/she/it would have been concerning
we would have been concerning
you would have been concerning
they would have been concerning