English verb conjugation
COULD PREAPPOINT

Regular verb: preappoint - preappointed - preappointed

Affirmation

Simple form	V-ing form
I could preappoint you could preappoint she could preappoint we could preappoint you could preappoint they could preappoint	I could be preappointing you could be preappointing she could be preappointing we could be preappointing you could be preappointing they could be preappointing
Perfect	V-ing perfect
I could have preappointed you could have preappointed she could have preappointed we could have preappointed you could have preappointed they could have preappointed	I could have been preappointing you could have been preappointing she could have been preappointing we could have been preappointing you could have been preappointing they could have been preappointing

Negation

Simple form	V-ing form
I couldn't preappoint you couldn't preappoint she couldn't preappoint we couldn't preappoint you couldn't preappoint they couldn't preappoint	I couldn't be preappointing you couldn't be preappointing she couldn't be preappointing we couldn't be preappointing you couldn't be preappointing they couldn't be preappointing
Perfect	V-ing perfect
I couldn't have preappointed you couldn't have preappointed she couldn't have preappointed we couldn't have preappointed you couldn't have preappointed they couldn't have preappointed	I couldn't have been preappointing you couldn't have been preappointing she couldn't have been preappointing we couldn't have been preappointing you couldn't have been preappointing they couldn't have been preappointing

Interrogative form

Simple form	V-ing form
could I preappoint? could you preappoint? could she preappoint? could we preappoint? could you preappoint? could they preappoint?	could I be preappointing? could you be preappointing? could she be preappointing? could we be preappointing? could you be preappointing? could they be preappointing?
Perfect	V-ing perfect
could I have preappointed? could you have preappointed? could she have preappointed? could we have preappointed? could you have preappointed? could they have preappointed?	could I have been preappointing? could you have been preappointing? could she have been preappointing? could we have been preappointing? could you have been preappointing? could they have been preappointing?

Interro-negative form

Simple form	V-ing form
couldn't I preappoint? couldn't you preappoint? couldn't she preappoint? couldn't we preappoint? couldn't you preappoint? couldn't they preappoint?	couldn't I be preappointing? couldn't you be preappointing? couldn't she be preappointing? couldn't we be preappointing? couldn't you be preappointing? couldn't they be preappointing?
Perfect	V-ing perfect
couldn't I have preappointed? couldn't you have preappointed? couldn't she have preappointed? couldn't we have preappointed? couldn't you have preappointed? couldn't they have preappointed?	couldn't I have been preappointing? couldn't you have been preappointing? couldn't she have been preappointing? couldn't we have been preappointing? couldn't you have been preappointing? couldn't they have been preappointing?