Indicative
Present Indefinite
I react upon
you react upon
he/she/it reacts upon
we react upon
you react upon
they react upon
Present Continuous
I am reacting upon
you are reacting upon
he/she/it is reacting upon
we are reacting upon
you are reacting upon
they are reacting upon
Present Perfect
I have reacted upon
you have reacted upon
he/she/it has reacted upon
we have reacted upon
you have reacted upon
they have reacted upon
Present Perfect Continuous
I have been reacting upon
you have been reacting upon
he/she/it has been reacting upon
we have been reacting upon
you have been reacting upon
they have been reacting upon
Past Indefinite
I reacted upon
you reacted upon
he/she/it reacted upon
we reacted upon
you reacted upon
they reacted upon
Past Continuous
I was reacting upon
you were reacting upon
he/she/it was reacting upon
we were reacting upon
you were reacting upon
they were reacting upon
Past Perfect
I had reacted upon
you had reacted upon
he/she/it had reacted upon
we had reacted upon
you had reacted upon
they had reacted upon
Past Perfect Continuous
I had been reacting upon
you had been reacting upon
he/she/it had been reacting upon
we had been reacting upon
you had been reacting upon
they had been reacting upon
Future Indefinite
I will react upon
you will react upon
he/she/it will react upon
we will react upon
you will react upon
they will react upon
Future Continuous
I will be reacting upon
you will be reacting upon
he/she/it will be reacting upon
we will be reacting upon
you will be reacting upon
they will be reacting upon
Future Perfect
I will have reacted upon
you will have reacted upon
he/she/it will have reacted upon
we will have reacted upon
you will have reacted upon
they will have reacted upon
Future Perfect Continuous
I will have been reacting upon
you will have been reacting upon
he/she/it will have been reacting upon
we will have been reacting upon
you will have been reacting upon
they will have been reacting upon
Conditional
Conditional Present
I would react upon
you would react upon
he/she/it would react upon
we would react upon
you would react upon
they would react upon
Conditional Present Continuous
I would be reacting upon
you would be reacting upon
he/she/it would be reacting upon
we would be reacting upon
you would be reacting upon
they would be reacting upon
Conditional Perfect
I would have reacted upon
you would have reacted upon
he/she/it would have reacted upon
we would have reacted upon
you would have reacted upon
they would have reacted upon
Conditional Perfect Continuous
I would have been reacting upon
you would have been reacting upon
he/she/it would have been reacting upon
we would have been reacting upon
you would have been reacting upon
they would have been reacting upon