could ingest
Regular verb: ingest - ingested- ingested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ingest
you could ingest
he could ingest
we could ingest
you could ingest
they could ingest 	I could be ingesting
you could be ingesting
he could be ingesting
we could be ingesting
you could be ingesting
they could be ingesting	I could have ingested
you could have ingested
he could have ingested
we could have ingested
you could have ingested
they could have ingested	I could have been ingesting
you could have been ingesting
he could have been ingesting
we could have been ingesting
you could have been ingesting
they could have been ingesting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't ingest
you couldn't ingest
he couldn't ingest
we couldn't ingest
you couldn't ingest
they couldn't ingest 	I couldn't be ingesting
you couldn't be ingesting
he couldn't be ingesting
we couldn't be ingesting
you couldn't be ingesting
they couldn't be ingesting	I couldn't have ingested
you couldn't have ingested
he couldn't have ingested
we couldn't have ingested
you couldn't have ingested
they couldn't have ingested	I couldn't have been ingesting
you couldn't have been ingesting
he couldn't have been ingesting
we couldn't have been ingesting
you couldn't have been ingesting
they couldn't have been ingesting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ingest?
could you ingest?
could he ingest?
could we ingest?
could you ingest?
could they ingest? 	could I be ingesting?
could you be ingesting?
could he be ingesting?
could we be ingesting?
could you be ingesting?
could they be ingesting? 	could I have ingested?
could you have ingested?
could he have ingested?
could we have ingested?
could you have ingested?
could they have ingested? 	could I have been ingesting?
could you have been ingesting?
could he have been ingesting?
could we have been ingesting?
could you have been ingesting?
could they have been ingesting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I ingest?
couldn't you ingest?
couldn't he ingest?
couldn't we ingest?
couldn't you ingest?
couldn't they ingest? 	couldn't I be ingesting?
couldn't you be ingesting?
couldn't he be ingesting?
couldn't we be ingesting?
couldn't you be ingesting?
couldn't they be ingesting? 	couldn't I have ingested?
couldn't you have ingested?
couldn't he have ingested?
couldn't we have ingested?
couldn't you have ingested?
couldn't they have ingested? 	couldn't I have been ingesting?
couldn't you have been ingesting?
couldn't he have been ingesting?
couldn't we have been ingesting?
couldn't you have been ingesting?
couldn't they have been ingesting?