Indicative
Present Indefinite
I concentrate
you concentrate
he/she/it concentrates
we concentrate
you concentrate
they concentrate
Present Continuous
I am concentrating
you are concentrating
he/she/it is concentrating
we are concentrating
you are concentrating
they are concentrating
Present Perfect
I have concentrated
you have concentrated
he/she/it has concentrated
we have concentrated
you have concentrated
they have concentrated
Present Perfect Continuous
I have been concentrating
you have been concentrating
he/she/it has been concentrating
we have been concentrating
you have been concentrating
they have been concentrating
Past Indefinite
I concentrated
you concentrated
he/she/it concentrated
we concentrated
you concentrated
they concentrated
Past Continuous
I was concentrating
you were concentrating
he/she/it was concentrating
we were concentrating
you were concentrating
they were concentrating
Past Perfect
I had concentrated
you had concentrated
he/she/it had concentrated
we had concentrated
you had concentrated
they had concentrated
Past Perfect Continuous
I had been concentrating
you had been concentrating
he/she/it had been concentrating
we had been concentrating
you had been concentrating
they had been concentrating
Future Indefinite
I will concentrate
you will concentrate
he/she/it will concentrate
we will concentrate
you will concentrate
they will concentrate
Future Continuous
I will be concentrating
you will be concentrating
he/she/it will be concentrating
we will be concentrating
you will be concentrating
they will be concentrating
Future Perfect
I will have concentrated
you will have concentrated
he/she/it will have concentrated
we will have concentrated
you will have concentrated
they will have concentrated
Future Perfect Continuous
I will have been concentrating
you will have been concentrating
he/she/it will have been concentrating
we will have been concentrating
you will have been concentrating
they will have been concentrating
Conditional
Conditional Present
I would concentrate
you would concentrate
he/she/it would concentrate
we would concentrate
you would concentrate
they would concentrate
Conditional Present Continuous
I would be concentrating
you would be concentrating
he/she/it would be concentrating
we would be concentrating
you would be concentrating
they would be concentrating
Conditional Perfect
I would have concentrated
you would have concentrated
he/she/it would have concentrated
we would have concentrated
you would have concentrated
they would have concentrated
Conditional Perfect Continuous
I would have been concentrating
you would have been concentrating
he/she/it would have been concentrating
we would have been concentrating
you would have been concentrating
they would have been concentrating