must scribble
Verbo regular: scribble - scribbled- scribbled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must scribble
you must scribble
he must scribble
we must scribble
you must scribble
they must scribble 	I must be scribbling
you must be scribbling
he must be scribbling
we must be scribbling
you must be scribbling
they must be scribbling	I must have scribbled
you must have scribbled
he must have scribbled
we must have scribbled
you must have scribbled
they must have scribbled	I must have been scribbling
you must have been scribbling
he must have been scribbling
we must have been scribbling
you must have been scribbling
they must have been scribbling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not scribble
you must not scribble
he must not scribble
we must not scribble
you must not scribble
they must not scribble 	I must not be scribbling
you must not be scribbling
he must not be scribbling
we must not be scribbling
you must not be scribbling
they must not be scribbling	I must not have scribbled
you must not have scribbled
he must not have scribbled
we must not have scribbled
you must not have scribbled
they must not have scribbled	I must not have been scribbling
you must not have been scribbling
he must not have been scribbling
we must not have been scribbling
you must not have been scribbling
they must not have been scribbling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I scribble?
must you scribble?
must he scribble?
must we scribble?
must you scribble?
must they scribble? 	must I be scribbling?
must you be scribbling?
must he be scribbling?
must we be scribbling?
must you be scribbling?
must they be scribbling? 	must I have scribbled?
must you have scribbled?
must he have scribbled?
must we have scribbled?
must you have scribbled?
must they have scribbled? 	must I have been scribbling?
must you have been scribbling?
must he have been scribbling?
must we have been scribbling?
must you have been scribbling?
must they have been scribbling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not scribble?
must you not scribble?
must he not scribble?
must we not scribble?
must you not scribble?
must they not scribble? 	must I not be scribbling?
must you not be scribbling?
must he not be scribbling?
must we not be scribbling?
must you not be scribbling?
must they not be scribbling? 	must I not have scribbled?
must you not have scribbled?
must he not have scribbled?
must we not have scribbled?
must you not have scribbled?
must they not have scribbled? 	must I not have been scribbling?
must you not have been scribbling?
must he not have been scribbling?
must we not have been scribbling?
must you not have been scribbling?
must they not have been scribbling?