English verb conjugation
COULD PRECODE

Regular verb: precode - precoded - precoded

Affirmation

Simple form	V-ing form
I could precode you could precode she could precode we could precode you could precode they could precode	I could be precoding you could be precoding she could be precoding we could be precoding you could be precoding they could be precoding
Perfect	V-ing perfect
I could have precoded you could have precoded she could have precoded we could have precoded you could have precoded they could have precoded	I could have been precoding you could have been precoding she could have been precoding we could have been precoding you could have been precoding they could have been precoding

Negation

Simple form	V-ing form
I couldn't precode you couldn't precode she couldn't precode we couldn't precode you couldn't precode they couldn't precode	I couldn't be precoding you couldn't be precoding she couldn't be precoding we couldn't be precoding you couldn't be precoding they couldn't be precoding
Perfect	V-ing perfect
I couldn't have precoded you couldn't have precoded she couldn't have precoded we couldn't have precoded you couldn't have precoded they couldn't have precoded	I couldn't have been precoding you couldn't have been precoding she couldn't have been precoding we couldn't have been precoding you couldn't have been precoding they couldn't have been precoding

Interrogative form

Simple form	V-ing form
could I precode? could you precode? could she precode? could we precode? could you precode? could they precode?	could I be precoding? could you be precoding? could she be precoding? could we be precoding? could you be precoding? could they be precoding?
Perfect	V-ing perfect
could I have precoded? could you have precoded? could she have precoded? could we have precoded? could you have precoded? could they have precoded?	could I have been precoding? could you have been precoding? could she have been precoding? could we have been precoding? could you have been precoding? could they have been precoding?

Interro-negative form

Simple form	V-ing form
couldn't I precode? couldn't you precode? couldn't she precode? couldn't we precode? couldn't you precode? couldn't they precode?	couldn't I be precoding? couldn't you be precoding? couldn't she be precoding? couldn't we be precoding? couldn't you be precoding? couldn't they be precoding?
Perfect	V-ing perfect
couldn't I have precoded? couldn't you have precoded? couldn't she have precoded? couldn't we have precoded? couldn't you have precoded? couldn't they have precoded?	couldn't I have been precoding? couldn't you have been precoding? couldn't she have been precoding? couldn't we have been precoding? couldn't you have been precoding? couldn't they have been precoding?