English verb conjugation
COULD PLOD

Regular verb: plod - plodded - plodded

Affirmation

Simple form	V-ing form
I could plod you could plod he could plod we could plod you could plod they could plod	I could be plodding you could be plodding he could be plodding we could be plodding you could be plodding they could be plodding
Perfect	V-ing perfect
I could have plodded you could have plodded he could have plodded we could have plodded you could have plodded they could have plodded	I could have been plodding you could have been plodding he could have been plodding we could have been plodding you could have been plodding they could have been plodding

Negation

Simple form	V-ing form
I couldn't plod you couldn't plod he couldn't plod we couldn't plod you couldn't plod they couldn't plod	I couldn't be plodding you couldn't be plodding he couldn't be plodding we couldn't be plodding you couldn't be plodding they couldn't be plodding
Perfect	V-ing perfect
I couldn't have plodded you couldn't have plodded he couldn't have plodded we couldn't have plodded you couldn't have plodded they couldn't have plodded	I couldn't have been plodding you couldn't have been plodding he couldn't have been plodding we couldn't have been plodding you couldn't have been plodding they couldn't have been plodding

Interrogative form

Simple form	V-ing form
could I plod? could you plod? could he plod? could we plod? could you plod? could they plod?	could I be plodding? could you be plodding? could he be plodding? could we be plodding? could you be plodding? could they be plodding?
Perfect	V-ing perfect
could I have plodded? could you have plodded? could he have plodded? could we have plodded? could you have plodded? could they have plodded?	could I have been plodding? could you have been plodding? could he have been plodding? could we have been plodding? could you have been plodding? could they have been plodding?

Interro-negative form

Simple form	V-ing form
couldn't I plod? couldn't you plod? couldn't he plod? couldn't we plod? couldn't you plod? couldn't they plod?	couldn't I be plodding? couldn't you be plodding? couldn't he be plodding? couldn't we be plodding? couldn't you be plodding? couldn't they be plodding?
Perfect	V-ing perfect
couldn't I have plodded? couldn't you have plodded? couldn't he have plodded? couldn't we have plodded? couldn't you have plodded? couldn't they have plodded?	couldn't I have been plodding? couldn't you have been plodding? couldn't he have been plodding? couldn't we have been plodding? couldn't you have been plodding? couldn't they have been plodding?