Present
I concenter
you concenter
he/she/it concenters
we concenter
you concenter
they concenter
|
Present continuous
I am concentering
you are concentering
he/she/it is concentering
we are concentering
you are concentering
they are concentering
|
Preterit
I concentered
you concentered
he/she/it concentered
we concentered
you concentered
they concentered
|
Preterit continuous
I was concentering
you were concentering
he/she/it was concentering
we were concentering
you were concentering
they were concentering
|
Present perfect
I have concentered
you have concentered
he/she/it has concentered
we have concentered
you have concentered
they have concentered
|
Present perfect continuous
I have been concentering
you have been concentering
he/she/it has been concentering
we have been concentering
you have been concentering
they have been concentering
|
Pluperfect
I had concentered
you had concentered
he/she/it had concentered
we had concentered
you had concentered
they had concentered
|
Pluperfect continuous
I had been concentering
you had been concentering
he/she/it had been concentering
we had been concentering
you had been concentering
they had been concentering
|
Future
I will concenter
you will concenter
he/she/it will concenter
we will concenter
you will concenter
they will concenter
|
Future continuous
I will be concentering
you will be concentering
he/she/it will be concentering
we will be concentering
you will be concentering
they will be concentering
|
Future perfect
I will have concentered
you will have concentered
he/she/it will have concentered
we will have concentered
you will have concentered
they will have concentered
|
Future perfect continuous
I will have been concentering
you will have been concentering
he/she/it will have been concentering
we will have been concentering
you will have been concentering
they will have been concentering
|