Indicative
Present Indefinite
I check up
you check up
he/she/it checks up
we check up
you check up
they check up
Present Continuous
I am checking up
you are checking up
he/she/it is checking up
we are checking up
you are checking up
they are checking up
Present Perfect
I have checked up
you have checked up
he/she/it has checked up
we have checked up
you have checked up
they have checked up
Present Perfect Continuous
I have been checking up
you have been checking up
he/she/it has been checking up
we have been checking up
you have been checking up
they have been checking up
Past Indefinite
I checked up
you checked up
he/she/it checked up
we checked up
you checked up
they checked up
Past Continuous
I was checking up
you were checking up
he/she/it was checking up
we were checking up
you were checking up
they were checking up
Past Perfect
I had checked up
you had checked up
he/she/it had checked up
we had checked up
you had checked up
they had checked up
Past Perfect Continuous
I had been checking up
you had been checking up
he/she/it had been checking up
we had been checking up
you had been checking up
they had been checking up
Future Indefinite
I will check up
you will check up
he/she/it will check up
we will check up
you will check up
they will check up
Future Continuous
I will be checking up
you will be checking up
he/she/it will be checking up
we will be checking up
you will be checking up
they will be checking up
Future Perfect
I will have checked up
you will have checked up
he/she/it will have checked up
we will have checked up
you will have checked up
they will have checked up
Future Perfect Continuous
I will have been checking up
you will have been checking up
he/she/it will have been checking up
we will have been checking up
you will have been checking up
they will have been checking up
Conditional
Conditional Present
I would check up
you would check up
he/she/it would check up
we would check up
you would check up
they would check up
Conditional Present Continuous
I would be checking up
you would be checking up
he/she/it would be checking up
we would be checking up
you would be checking up
they would be checking up
Conditional Perfect
I would have checked up
you would have checked up
he/she/it would have checked up
we would have checked up
you would have checked up
they would have checked up
Conditional Perfect Continuous
I would have been checking up
you would have been checking up
he/she/it would have been checking up
we would have been checking up
you would have been checking up
they would have been checking up