to crumble
Regular verb: crumble - crumbled- crumbled

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I don't crumble
you don't crumble
he doesn't crumble
we don't crumble
you don't crumble
they don't crumble 	I'mnot crumbling
youaren't crumbling
heisn't crumbling
wearen't crumbling
youaren't crumbling
theyaren't crumbling	I didn't crumble
you didn't crumble
he didn't crumble
we didn't crumble
you didn't crumble
they didn't crumble 	Iwasn't crumbling
youweren't crumbling
hewasn't crumbling
weweren't crumbling
youweren't crumbling
theyweren't crumbling	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I haven't crumbled
you haven't crumbled
he hasn't crumbled
we haven't crumbled
you haven't crumbled
they haven't crumbled	I haven't  been crumbling
you haven't  been crumbling
he hasn't  been crumbling
we haven't  been crumbling
you haven't  been crumbling
they haven't  been crumbling	I hadn't crumbled
you hadn't crumbled
he hadn't crumbled
we hadn't crumbled
you hadn't crumbled
they hadn't crumbled	I hadn't been crumbling
you hadn't been crumbling
he hadn't been crumbling
we hadn't been crumbling
you hadn't been crumbling
they hadn't been crumbling	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I won't crumble
you won't crumble
he won't crumble
we won't crumble
you won't crumble
they won't crumble 	I won't be crumbling
you won't be crumbling
he won't be crumbling
we won't be crumbling
you won't be crumbling
they won't be crumbling	I won't have crumbled
you won't have crumbled
he won't have crumbled
we won't have crumbled
you won't have crumbled
they won't have crumbled	I won't have been crumbling
you won't have been crumbling
he won't have been crumbling
we won't have been crumbling
you won't have been crumbling
they won't have been crumbling	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I wouldn't crumble
you wouldn't crumble
he wouldn't crumble
we wouldn't crumble
you wouldn't crumble
they wouldn't crumble 	I wouldn't be crumbling
you wouldn't be crumbling
he wouldn't be crumbling
we wouldn't be crumbling
you wouldn't be crumbling
they wouldn't be crumbling	I wouldn't have crumbled
you wouldn't have crumbled
he wouldn't have crumbled
we wouldn't have crumbled
you wouldn't have crumbled
they wouldn't have crumbled	I wouldn't have been crumbling
you wouldn't have been crumbling
he wouldn't have been crumbling
we wouldn't have been crumbling
you wouldn't have been crumbling
they wouldn't have been crumbling	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to crumble 	 	do not crumble
Let's not crumble
do not crumble 	 	

Participle 	
Present 	Past 	 	 	
crumbling	crumbled