| singular | plural |
Infinitive | | |
| concern | |
present simple | | |
1 | I concern | we concern |
2 | you concern | you concern |
3 | he/she/it concerns | they concern |
past simple | | |
1 | I concerned | we concerned |
2 | you concerned | you concerned |
3 | he/she/it concerned | they concerned |
future simple | | |
1 | I will/shall concern | we will/shall concern |
2 | you will/shall concern | you will/shall concern |
3 | he/she/it will/shall concern | they will/shall concern |
conditional simple | | |
1 | I would concern | we would concern |
2 | you would concern | you would concern |
3 | he/she/it would concern | they would concern |
present continuous | | |
1 | I am concerning | we are concerning |
2 | you are concerning | you are concerning |
3 | he/she/it is concerning | they are concerning |
past continuous | | |
1 | I was concerning | we were concerning |
2 | you were concerning | you were concerning |
3 | he/she/it was concerning | they were concerning |
future continuous | | |
1 | I will be concerning | we will be concerning |
2 | you will be concerning | you will be concerning |
3 | he/she/it will be concerning | they will be concerning |
conditional continuous | | |
1 | I would be concerning | we would be concerning |
2 | you would be concerning | you would be concerning |
3 | he/she/it would be concerning | they would be concerning |
present perfect | | |
1 | I have concerned | we have concerned |
2 | you have concerned | you have concerned |
3 | he/she/it has concerned | they have concerned |
past perfect | | |
1 | I had concerned | we had concerned |
2 | you had concerned | you had concerned |
3 | he/she/it had concerned | they had concerned |
future perfect | | |
1 | I will have concerned | we will have concerned |
2 | you will have concerned | you will have concerned |
3 | he/she/it will have concerned | they will have concerned |
conditional perfect | | |
1 | I would have concerned | we would have concerned |
2 | you would have concerned | you would have concerned |
3 | he/she/it would have concerned | they would have concerned |