may thumb
Verbo regular: thumb - thumbed- thumbed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may thumb
you may thumb
she may thumb
we may thumb
you may thumb
they may thumb 	I may be thumbing
you may be thumbing
she may be thumbing
we may be thumbing
you may be thumbing
they may be thumbing	I may have thumbed
you may have thumbed
she may have thumbed
we may have thumbed
you may have thumbed
they may have thumbed	I may have been thumbing
you may have been thumbing
she may have been thumbing
we may have been thumbing
you may have been thumbing
they may have been thumbing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not thumb
you may not thumb
she may not thumb
we may not thumb
you may not thumb
they may not thumb 	I may not be thumbing
you may not be thumbing
she may not be thumbing
we may not be thumbing
you may not be thumbing
they may not be thumbing	I may not have thumbed
you may not have thumbed
she may not have thumbed
we may not have thumbed
you may not have thumbed
they may not have thumbed	I may not have been thumbing
you may not have been thumbing
she may not have been thumbing
we may not have been thumbing
you may not have been thumbing
they may not have been thumbing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I thumb?
may you thumb?
may she thumb?
may we thumb?
may you thumb?
may they thumb? 	may I be thumbing?
may you be thumbing?
may she be thumbing?
may we be thumbing?
may you be thumbing?
may they be thumbing? 	may I have thumbed?
may you have thumbed?
may she have thumbed?
may we have thumbed?
may you have thumbed?
may they have thumbed? 	may I have been thumbing?
may you have been thumbing?
may she have been thumbing?
may we have been thumbing?
may you have been thumbing?
may they have been thumbing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not thumb?
may you not thumb?
may she not thumb?
may we not thumb?
may you not thumb?
may they not thumb? 	may I not be thumbing?
may you not be thumbing?
may she not be thumbing?
may we not be thumbing?
may you not be thumbing?
may they not be thumbing? 	may I not have thumbed?
may you not have thumbed?
may she not have thumbed?
may we not have thumbed?
may you not have thumbed?
may they not have thumbed? 	may I not have been thumbing?
may you not have been thumbing?
may she not have been thumbing?
may we not have been thumbing?
may you not have been thumbing?
may they not have been thumbing?