must underbake
Verbo regular: underbake - underbaked- underbaked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must underbake
you must underbake
he must underbake
we must underbake
you must underbake
they must underbake 	I must be underbaking
you must be underbaking
he must be underbaking
we must be underbaking
you must be underbaking
they must be underbaking	I must have underbaked
you must have underbaked
he must have underbaked
we must have underbaked
you must have underbaked
they must have underbaked	I must have been underbaking
you must have been underbaking
he must have been underbaking
we must have been underbaking
you must have been underbaking
they must have been underbaking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not underbake
you must not underbake
he must not underbake
we must not underbake
you must not underbake
they must not underbake 	I must not be underbaking
you must not be underbaking
he must not be underbaking
we must not be underbaking
you must not be underbaking
they must not be underbaking	I must not have underbaked
you must not have underbaked
he must not have underbaked
we must not have underbaked
you must not have underbaked
they must not have underbaked	I must not have been underbaking
you must not have been underbaking
he must not have been underbaking
we must not have been underbaking
you must not have been underbaking
they must not have been underbaking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I underbake?
must you underbake?
must he underbake?
must we underbake?
must you underbake?
must they underbake? 	must I be underbaking?
must you be underbaking?
must he be underbaking?
must we be underbaking?
must you be underbaking?
must they be underbaking? 	must I have underbaked?
must you have underbaked?
must he have underbaked?
must we have underbaked?
must you have underbaked?
must they have underbaked? 	must I have been underbaking?
must you have been underbaking?
must he have been underbaking?
must we have been underbaking?
must you have been underbaking?
must they have been underbaking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not underbake?
must you not underbake?
must he not underbake?
must we not underbake?
must you not underbake?
must they not underbake? 	must I not be underbaking?
must you not be underbaking?
must he not be underbaking?
must we not be underbaking?
must you not be underbaking?
must they not be underbaking? 	must I not have underbaked?
must you not have underbaked?
must he not have underbaked?
must we not have underbaked?
must you not have underbaked?
must they not have underbaked? 	must I not have been underbaking?
must you not have been underbaking?
must he not have been underbaking?
must we not have been underbaking?
must you not have been underbaking?
must they not have been underbaking?