could digest
Regular verb: digest - digested- digested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could digest
you could digest
she could digest
we could digest
you could digest
they could digest 	I could be digesting
you could be digesting
she could be digesting
we could be digesting
you could be digesting
they could be digesting	I could have digested
you could have digested
she could have digested
we could have digested
you could have digested
they could have digested	I could have been digesting
you could have been digesting
she could have been digesting
we could have been digesting
you could have been digesting
they could have been digesting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't digest
you couldn't digest
she couldn't digest
we couldn't digest
you couldn't digest
they couldn't digest 	I couldn't be digesting
you couldn't be digesting
she couldn't be digesting
we couldn't be digesting
you couldn't be digesting
they couldn't be digesting	I couldn't have digested
you couldn't have digested
she couldn't have digested
we couldn't have digested
you couldn't have digested
they couldn't have digested	I couldn't have been digesting
you couldn't have been digesting
she couldn't have been digesting
we couldn't have been digesting
you couldn't have been digesting
they couldn't have been digesting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I digest?
could you digest?
could she digest?
could we digest?
could you digest?
could they digest? 	could I be digesting?
could you be digesting?
could she be digesting?
could we be digesting?
could you be digesting?
could they be digesting? 	could I have digested?
could you have digested?
could she have digested?
could we have digested?
could you have digested?
could they have digested? 	could I have been digesting?
could you have been digesting?
could she have been digesting?
could we have been digesting?
could you have been digesting?
could they have been digesting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I digest?
couldn't you digest?
couldn't she digest?
couldn't we digest?
couldn't you digest?
couldn't they digest? 	couldn't I be digesting?
couldn't you be digesting?
couldn't she be digesting?
couldn't we be digesting?
couldn't you be digesting?
couldn't they be digesting? 	couldn't I have digested?
couldn't you have digested?
couldn't she have digested?
couldn't we have digested?
couldn't you have digested?
couldn't they have digested? 	couldn't I have been digesting?
couldn't you have been digesting?
couldn't she have been digesting?
couldn't we have been digesting?
couldn't you have been digesting?
couldn't they have been digesting?