may sustain
Verbo regular: sustain - sustained- sustained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may sustain
you may sustain
he may sustain
we may sustain
you may sustain
they may sustain 	I may be sustaining
you may be sustaining
he may be sustaining
we may be sustaining
you may be sustaining
they may be sustaining	I may have sustained
you may have sustained
he may have sustained
we may have sustained
you may have sustained
they may have sustained	I may have been sustaining
you may have been sustaining
he may have been sustaining
we may have been sustaining
you may have been sustaining
they may have been sustaining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mayn't sustain
you mayn't sustain
he mayn't sustain
we mayn't sustain
you mayn't sustain
they mayn't sustain 	I mayn't be sustaining
you mayn't be sustaining
he mayn't be sustaining
we mayn't be sustaining
you mayn't be sustaining
they mayn't be sustaining	I mayn't have sustained
you mayn't have sustained
he mayn't have sustained
we mayn't have sustained
you mayn't have sustained
they mayn't have sustained	I mayn't have been sustaining
you mayn't have been sustaining
he mayn't have been sustaining
we mayn't have been sustaining
you mayn't have been sustaining
they mayn't have been sustaining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I sustain?
may you sustain?
may he sustain?
may we sustain?
may you sustain?
may they sustain? 	may I be sustaining?
may you be sustaining?
may he be sustaining?
may we be sustaining?
may you be sustaining?
may they be sustaining? 	may I have sustained?
may you have sustained?
may he have sustained?
may we have sustained?
may you have sustained?
may they have sustained? 	may I have been sustaining?
may you have been sustaining?
may he have been sustaining?
may we have been sustaining?
may you have been sustaining?
may they have been sustaining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mayn't I sustain?
mayn't you sustain?
mayn't he sustain?
mayn't we sustain?
mayn't you sustain?
mayn't they sustain? 	mayn't I be sustaining?
mayn't you be sustaining?
mayn't he be sustaining?
mayn't we be sustaining?
mayn't you be sustaining?
mayn't they be sustaining? 	mayn't I have sustained?
mayn't you have sustained?
mayn't he have sustained?
mayn't we have sustained?
mayn't you have sustained?
mayn't they have sustained? 	mayn't I have been sustaining?
mayn't you have been sustaining?
mayn't he have been sustaining?
mayn't we have been sustaining?
mayn't you have been sustaining?
mayn't they have been sustaining?