concenter

• I concenter
• you concenter
• you concenter
• he/she/it concenters
• we concenter
• they concenter

• I concentered
• you concentered
• you concentered
• he/she/it concentered
• we concentered
• they concentered

• I am concentering
• you are concentering
• you are concentering
• he/she/it is concentering
• we are concentering
• they are concentering

• I have concentered
• you have concentered
• you have concentered
• he/she/it has concentered
• we have concentered
• they have concentered

• I will concenter
• you will concenter
• you will concenter
• he/she/it will concenter
• we will concenter
• they will concenter

• I will have concentered
• you will have concentered
• you will have concentered
• he/she/it will have concentered
• we will have concentered
• they will have concentered

• I was concentering
• you were concentering
• you were concentering
• he/she/it was concentering
• we were concentering
• they were concentering

• I had concentered
• you had concentered
• you had concentered
• he/she/it had concentered
• we had concentered
• they had concentered

• I will be concentering
• you will be concentering
• you will be concentering
• he/she/it will be concentering
• we will be concentering
• they will be concentering

• I have been concentering
• you have been concentering
• you have been concentering
• he/she/it has been concentering
• we have been concentering
• they have been concentering

• I had been concentering
• you had been concentering
• you had been concentering
• he/she/it had been concentering
• we had been concentering
• they had been concentering

• I will have been concentering
• you will have been concentering
• you will have been concentering
• he/she/it will have been concentering
• we will have been concentering
• they will have been concentering

• concentering

• concentered

• having concentered