can source
Verbo regular: source - sourced- sourced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can source
you can source
he can source
we can source
you can source
they can source 	I can be sourcing
you can be sourcing
he can be sourcing
we can be sourcing
you can be sourcing
they can be sourcing	I can have sourced
you can have sourced
he can have sourced
we can have sourced
you can have sourced
they can have sourced	I can have been sourcing
you can have been sourcing
he can have been sourcing
we can have been sourcing
you can have been sourcing
they can have been sourcing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot source
you cannot source
he cannot source
we cannot source
you cannot source
they cannot source 	I cannot be sourcing
you cannot be sourcing
he cannot be sourcing
we cannot be sourcing
you cannot be sourcing
they cannot be sourcing	I cannot have sourced
you cannot have sourced
he cannot have sourced
we cannot have sourced
you cannot have sourced
they cannot have sourced	I cannot have been sourcing
you cannot have been sourcing
he cannot have been sourcing
we cannot have been sourcing
you cannot have been sourcing
they cannot have been sourcing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I source?
can you source?
can he source?
can we source?
can you source?
can they source? 	can I be sourcing?
can you be sourcing?
can he be sourcing?
can we be sourcing?
can you be sourcing?
can they be sourcing? 	can I have sourced?
can you have sourced?
can he have sourced?
can we have sourced?
can you have sourced?
can they have sourced? 	can I have been sourcing?
can you have been sourcing?
can he have been sourcing?
can we have been sourcing?
can you have been sourcing?
can they have been sourcing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not source?
can you not source?
can he not source?
can we not source?
can you not source?
can they not source? 	can I not be sourcing?
can you not be sourcing?
can he not be sourcing?
can we not be sourcing?
can you not be sourcing?
can they not be sourcing? 	can I not have sourced?
can you not have sourced?
can he not have sourced?
can we not have sourced?
can you not have sourced?
can they not have sourced? 	can I not have been sourcing?
can you not have been sourcing?
can he not have been sourcing?
can we not have been sourcing?
can you not have been sourcing?
can they not have been sourcing?