to crumble
Regular verb: crumble - crumbled- crumbled

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I crumble
you crumble
he crumbles
we crumble
you crumble
they crumble 	Iamcrumbling
youarecrumbling
heiscrumbling
wearecrumbling
youarecrumbling
theyarecrumbling	I crumbled
you crumbled
he crumbled
we crumbled
you crumbled
they crumbled	Iwascrumbling
youwerecrumbling
hewascrumbling
wewerecrumbling
youwerecrumbling
theywerecrumbling	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I have crumbled
you have crumbled
he has crumbled
we have crumbled
you have crumbled
they have crumbled	I have been crumbling
you have been crumbling
hehasbeen crumbling
we have been crumbling
you have been crumbling
they have been crumbling	I had crumbled
you had crumbled
he had crumbled
we had crumbled
you had crumbled
they had crumbled	I had been crumbling
you had been crumbling
he had been crumbling
we had been crumbling
you had been crumbling
they had been crumbling	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I will crumble
you will crumble
he will crumble
we will crumble
you will crumble
they will crumble 	I will be crumbling
you will be crumbling
he will be crumbling
we will be crumbling
you will be crumbling
they will be crumbling	I will have crumbled
you will have crumbled
he will have crumbled
we will have crumbled
you will have crumbled
they will have crumbled	I will have been crumbling
you will have been crumbling
he will have been crumbling
we will have been crumbling
you will have been crumbling
they will have been crumbling	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I would crumble
you would crumble
he would crumble
we would crumble
you would crumble
they would crumble 	I would be crumbling
you would be crumbling
he would be crumbling
we would be crumbling
you would be crumbling
they would be crumbling	I would have crumbled
you would have crumbled
he would have crumbled
we would have crumbled
you would have crumbled
they would have crumbled	I would have been crumbling
you would have been crumbling
he would have been crumbling
we would have been crumbling
you would have been crumbling
they would have been crumbling	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to crumble 	 	crumble
Let's crumble
crumble 	 	

Participle 	
Present 	Past 	 	 	
crumbling	crumbled