English verb conjugation
COULD ENTOMB

Regular verb: entomb - entombed - entombed

Affirmation

Simple form	V-ing form
I could entomb you could entomb he could entomb we could entomb you could entomb they could entomb	I could be entombing you could be entombing he could be entombing we could be entombing you could be entombing they could be entombing
Perfect	V-ing perfect
I could have entombed you could have entombed he could have entombed we could have entombed you could have entombed they could have entombed	I could have been entombing you could have been entombing he could have been entombing we could have been entombing you could have been entombing they could have been entombing

Negation

Simple form	V-ing form
I couldn't entomb you couldn't entomb he couldn't entomb we couldn't entomb you couldn't entomb they couldn't entomb	I couldn't be entombing you couldn't be entombing he couldn't be entombing we couldn't be entombing you couldn't be entombing they couldn't be entombing
Perfect	V-ing perfect
I couldn't have entombed you couldn't have entombed he couldn't have entombed we couldn't have entombed you couldn't have entombed they couldn't have entombed	I couldn't have been entombing you couldn't have been entombing he couldn't have been entombing we couldn't have been entombing you couldn't have been entombing they couldn't have been entombing

Interrogative form

Simple form	V-ing form
could I entomb? could you entomb? could he entomb? could we entomb? could you entomb? could they entomb?	could I be entombing? could you be entombing? could he be entombing? could we be entombing? could you be entombing? could they be entombing?
Perfect	V-ing perfect
could I have entombed? could you have entombed? could he have entombed? could we have entombed? could you have entombed? could they have entombed?	could I have been entombing? could you have been entombing? could he have been entombing? could we have been entombing? could you have been entombing? could they have been entombing?

Interro-negative form

Simple form	V-ing form
couldn't I entomb? couldn't you entomb? couldn't he entomb? couldn't we entomb? couldn't you entomb? couldn't they entomb?	couldn't I be entombing? couldn't you be entombing? couldn't he be entombing? couldn't we be entombing? couldn't you be entombing? couldn't they be entombing?
Perfect	V-ing perfect
couldn't I have entombed? couldn't you have entombed? couldn't he have entombed? couldn't we have entombed? couldn't you have entombed? couldn't they have entombed?	couldn't I have been entombing? couldn't you have been entombing? couldn't he have been entombing? couldn't we have been entombing? couldn't you have been entombing? couldn't they have been entombing?