Indicative
Present Indefinite
I crumble
you crumble
he/she/it crumbles
we crumble
you crumble
they crumble
Present Continuous
I am crumbling
you are crumbling
he/she/it is crumbling
we are crumbling
you are crumbling
they are crumbling
Present Perfect
I have crumbled
you have crumbled
he/she/it has crumbled
we have crumbled
you have crumbled
they have crumbled
Present Perfect Continuous
I have been crumbling
you have been crumbling
he/she/it has been crumbling
we have been crumbling
you have been crumbling
they have been crumbling
Past Indefinite
I crumbled
you crumbled
he/she/it crumbled
we crumbled
you crumbled
they crumbled
Past Continuous
I was crumbling
you were crumbling
he/she/it was crumbling
we were crumbling
you were crumbling
they were crumbling
Past Perfect
I had crumbled
you had crumbled
he/she/it had crumbled
we had crumbled
you had crumbled
they had crumbled
Past Perfect Continuous
I had been crumbling
you had been crumbling
he/she/it had been crumbling
we had been crumbling
you had been crumbling
they had been crumbling
Future Indefinite
I will crumble
you will crumble
he/she/it will crumble
we will crumble
you will crumble
they will crumble
Future Continuous
I will be crumbling
you will be crumbling
he/she/it will be crumbling
we will be crumbling
you will be crumbling
they will be crumbling
Future Perfect
I will have crumbled
you will have crumbled
he/she/it will have crumbled
we will have crumbled
you will have crumbled
they will have crumbled
Future Perfect Continuous
I will have been crumbling
you will have been crumbling
he/she/it will have been crumbling
we will have been crumbling
you will have been crumbling
they will have been crumbling
Conditional
Conditional Present
I would crumble
you would crumble
he/she/it would crumble
we would crumble
you would crumble
they would crumble
Conditional Present Continuous
I would be crumbling
you would be crumbling
he/she/it would be crumbling
we would be crumbling
you would be crumbling
they would be crumbling
Conditional Perfect
I would have crumbled
you would have crumbled
he/she/it would have crumbled
we would have crumbled
you would have crumbled
they would have crumbled
Conditional Perfect Continuous
I would have been crumbling
you would have been crumbling
he/she/it would have been crumbling
we would have been crumbling
you would have been crumbling
they would have been crumbling