I could wad you could wad he could wad we could wad you could wad they could wad
V-ing form
I could be wadding you could be wadding he could be wadding we could be wadding you could be wadding they could be wadding
Perfect
I could have wadded you could have wadded he could have wadded we could have wadded you could have wadded they could have wadded
V-ing perfect
I could have been wadding you could have been wadding he could have been wadding we could have been wadding you could have been wadding they could have been wadding
Negation
Simple form
I could not wad you could not wad he could not wad we could not wad you could not wad they could not wad
V-ing form
I could not be wadding you could not be wadding he could not be wadding we could not be wadding you could not be wadding they could not be wadding
Perfect
I could not have wadded you could not have wadded he could not have wadded we could not have wadded you could not have wadded they could not have wadded
V-ing perfect
I could not have been wadding you could not have been wadding he could not have been wadding we could not have been wadding you could not have been wadding they could not have been wadding
Interrogative form
Simple form
could I wad? could you wad? could he wad? could we wad? could you wad? could they wad?
V-ing form
could I be wadding? could you be wadding? could he be wadding? could we be wadding? could you be wadding? could they be wadding?
Perfect
could I have wadded? could you have wadded? could he have wadded? could we have wadded? could you have wadded? could they have wadded?
V-ing perfect
could I have been wadding? could you have been wadding? could he have been wadding? could we have been wadding? could you have been wadding? could they have been wadding?
Interro-negative form
Simple form
could I not wad? could you not wad? could he not wad? could we not wad? could you not wad? could they not wad?
V-ing form
could I not be wadding? could you not be wadding? could he not be wadding? could we not be wadding? could you not be wadding? could they not be wadding?
Perfect
could I not have wadded? could you not have wadded? could he not have wadded? could we not have wadded? could you not have wadded? could they not have wadded?
V-ing perfect
could I not have been wadding? could you not have been wadding? could he not have been wadding? could we not have been wadding? could you not have been wadding? could they not have been wadding?